Answer:hundreds of cells
Explanation: the fusion of male and female gametes forms a zygote, during early development one single cell divides in to two after few hours from fertilization. it furthers the division into four and which are made up of sixteen cells that is other-wisely called MORULA at the end of the third day. The cells continues the division at the of ninth day to form a BLASTOCYST which contains hundreds of cells.
the blastocyst must be able to attach to the lining of uterine where it derives every nourishment to grow and survive, without this there would be loss of such pregnancy
Nuclear power plants require a lot of water to operate.
true or false
The answer is true
Explanation:
Nuclear power plants require a lot of water to operate. This is because cooling water is needed in many processes of powering nuclear power plants such as the thermodynamic processes that enables the power plant to a stable temperature.
True, nuclear power plants require a lot of water, primarily for cooling purposes. Water absorbs the excess heat generated by the nuclear fission process in the reactor and transports it away, preventing overheating.
Explanation:True, nuclear power plants do require a lot of water to operate. The primary reason for this is for cooling purposes. The heat generated by the nuclear fission process in the reactor core needs to be cooled to prevent the reactor from overheating, which could result in a nuclear meltdown. The cooling process typically involves using a coolant, usually water, which absorbs the excess heat and transports it away from the reactor. This cooled water is usually released back into the natural environment, such as a river or the ocean, but some of it evaporates into the atmosphere.
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The original source of energy for the pyramid is the
A) sun.
B) all photosynthetic organisms.
C) decomposers, not seen in the pyramid.
D) phytoplankton, which are photosynthetic.
Answer:
A
Explanation: he Sun is the original source of energy in all food chains on the surface of the Earth and in the upper parts of the Oceans. Primary Producer.
The original source of energy for the pyramid is the Sun. So, the correct option is A.
What is Ecological pyramid?An ecological pyramid is defined as a graphical representation of the relationships between different living organisms at different trophic levels which shows the flow of energy at different trophic levels in an ecosystem.
Autotrophs are so called producers are at the first trophic level that fix solar energy and make it available to heterotrophs or consumers while herbivores called primary consumers come second, small carnivores or secondary consumers at third and the large carnivores or tertiary consumers form the fourth trophic level.
Thus, the original source of energy for the pyramid is the Sun. So, the correct option is A.
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Is mount rainier a top-down or bottom-up
Cancer is named based on the types of cells or tissues where it
Answer:
The naming of cancers depends on both the factors.
Explanation:
Different type of cancers are named on the basis of location of its origin.
-carcinoma, -sarcoma, -blastoma are the terms used as suffix, with the Latin or Greek word for the organ or tissue from where it had originated.
For example: Breast cancer is known as Ductal carcinoma of Breasts.
[ because it initiates from the tubes(ducts) that carry milk from breasts to the nipples, and carcinoma as suffix ]
Describe how breathing is controlled
What 3 factors cause ocean tides?
Answer:
They occur when the Earth, the Sun, and the Moon are in a line. The gravitational forces of the Moon and the Sun both contribute to the tides. Spring tides occur during the full moon and the new moon.
The relationship between the masses of the Earth, moon, and sun and their distances to each other play a critical role in affecting the Earth's tides.
Which factor does not cause tides?
The wind is the primary force that causes ocean surface waves, but it does not cause tides. Tides are the daily changes in the level of ocean water at any given place. The main factors that cause tides are the gravitational pull of the Moon and the Sun
What are the three different tidal cycles that we experience on Earth?
As a result, different tidal cycles can be experienced in different regions of the world. They are called semi-diurnal, diurnal, or mixed semidiurnal tidal cycles.
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Which best describes how ocean currents are created?
O A. Heating differences between the poles and the equator because
of the sun lead to convection.
O B. Wind differences between the poles and the equator because of
the sun's light lead to ocean currents.
O
C. Earth's rotation disturbs ocean waters, leading to a system of
currents between the poles and equator.
Answer:A.
Explanation:
Just did it.
Ocean currents are created by the heating differences between the poles and equator due to solar heating, which leads to convection, and are also influenced by Earth's rotation causing the Coriolis effect.
A is correct
Explanation:The creation of ocean currents is best described by the process of heating differences between the poles and equator due to the sun, which leads to convection. This is because the flow of matter is driven by large-scale convection, where warm water rises and cold water sinks due to changes in density related to temperature changes.
Additionally, the Earth's rotation also plays a significant role by causing the Coriolis effect, which affects the patterns of flow in the oceans. Therefore, both the heating difference and Earth's rotational movement combine to create the system of ocean currents that transfer heat around the planet.
The formula for logistic growth rate is shown above. A population of salmon has a carrying capacity of 2500 in a small fishery.
What will occur when the population reaches 3000 for the salmon?
A)
The population will stabilize at 3000.
The population can never reach 3000 in this case.
The population will grow because the growth rate will be positive.
The population will decline because the growth rate will be negative.
Answer:
d
Explanation:
The population will decline because the growth rate will be negative. Therefore, option (D) is correct.
What is growth rate?Growth rates are used to calculate the yearly percentage change in a variable. A variable's growth rate may be positive or negative, indicating whether it is rising or decreasing with time. Growth rates may be useful in determining the current and future success of an organisation.
The greatest number of a biological species that can be supported by a particular environment, given the availability of food, habitat, water, and other resources, is known as the carrying capacity of that ecosystem.
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8. Compared to the squid, vertebrate eyes are poorly engineered
because where the nerves exit, it creates a:
a. dark ring b. floating vessel c. blind spot d. blood clot
Answer
C. Blind Spot
Explanation: The short explanation is that vertebrates blind spot is because it is part of our "visual field" that we get no information from. This so called "blind spot" is absent in octopods and squid (I hope I helped! :)
The vertebrate eye has a blind spot where the optic nerve exits the retina. This contrasts with the squid's eye design, which doesn't have a blind spot because of the different nerve connections.
Explanation:Compared to squid eyes, vertebrate eyes have an anatomical feature known as the blind spot. This is the point on the retina where the optic nerve exits, and as such, it lacks photoreceptor cells, resulting in a gap in the visual field. However, our brains interpolate the missing information so that we don't perceive this blind spot in normal vision. In squid eyes, the optic nerves connect in a way that doesn't create this blind spot. This is one reason why some argue that the squid's eye, evolutionarily speaking, exhibits better design over vertebrate eyes when considering this aspect.
Humans, bats, birds, and squids display various adaptations in their sensory organs. For example, some bats and birds have wings that enable them to fly, indicating different evolutionary paths with convergent outcomes, much like how different species develop structures like eyes independently.
During eukaryotic transcription, an RNA molecule
is formed that is?
Answer:
During transcription, mRNA (messenger RNA) molecule is formed via complementary base pairing of ribonucleotides with the template strand DNA. Thymine bases on the RNA , complementary to adenine bases, are replaced with uracil bases. mRNA sequence is identical to the coding strand, with T bases changed to U bases and the mRNA sequence is complementary to the template strand DNA.
Explanation:
During eukaryotic transcription, an RNA molecule is formed that is complementary to one gene or one part of a single side of the DNA molecule. The correct option is D.
What is transcription?In genomics, transcription is the process of creating an RNA copy of a gene's DNA sequence. This copy, known as messenger RNA (mRNA), transports the protein information encoded in the gene's DNA.
Eukaryotic transcription is divided into three stages: initiation, elongation, and termination.
The RNAs that are transcribed perform a variety of functions. RNA polymerase I, for example, transcribes structural components of the ribosome.
Only one strand of DNA is used as a template for the production of the RNA molecule during transcription, and this is done according to complementarity rules, which state that cytosine binds to guanine and adenine binds to uracil.
Thus, the correct option is D.
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Your question seems incomplete, the missing options are:
A. complementary to both strands of DNA.
B. identical to an entire single strand of DNA.
C. double-stranded and inside the nucleus.
D. complementary to part of one strand of DNA.
will give brainlist if right!
Leukocytes are found in lots of places, including an organ in your belly that filters
blood and helps fight infections known as the:
A. Heart
B. Spleen
C. Kidneys
D. Brain
Answer:
B. Spleen
Explanation:
The spleen is part of the lymphatic system. The lymphatic system helps to drain toxins and houses lymphocytes.
How does the male reproductive system differ from the female reproductive system
the male reproductive system consists of external organs. while the female reproductive system consists of internal organs.
The role of photosynthesis in the cycling of matter and flow of energy into and out of organisms
Photosynthesis in plants is a vital process that converts light energy into glucose and produces oxygen. It facilitates the cycling of matter and energy flow in organisms.
Explanation:Photosynthesis is the process by which green plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose (a form of energy) and oxygen. It plays a crucial role in the cycling of matter and energy flow in organisms. During photosynthesis, plants take in carbon dioxide from the atmosphere and release oxygen, which is used by animals for respiration. Additionally, glucose produced during photosynthesis serves as a source of energy for plants and is passed on to other organisms when they consume plant material.
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Why are there hundreds of different protein channels
Explanation:
This is because there are varied cell receptor types which recognize electrical signals, and hundreds of different signal molecules and allow the entry of substances into the cell. Each receptor-channel interaction may be specific to certain molecules, allowing for only their passage through the transport protein into the cell.
Further Explanation:
Proteins are structural support molecules comprised of long chains of amino acids joined via peptide (CONH) bonds; these are 20 specific units that are arranged into several macromolecules. Amino acids are absorbed through digestion and are incorporated into the body’s cells to build and repair organs, muscles, signal molecules and an alternative energy source.
Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers. Carrier proteins and channel proteins are the two major classes of membrane transport proteins; these allow the transport of large molecules called solutes (including essential biomolecules) to cross the membrane. Carrier proteins (also called carriers, permeases, or transporters) bind the specific solute to be transported and undergo a series of conformational changes to transfer the bound solute across the membrane. Others cross the membrane through the process of endocytosis, which utilizes membrane-bound organelles for transport.
In specific cell types, collected proteins may function as a unit called an organelle. Some organelles are bound by membranes like those that make up the external structure of the cell, with varying compositions of phospholipids and proteins.
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Protein channels are numerous due to their roles in specificity/selectivity, regulating cellular environment, specialized functions in different cells, and evolutionary adaptation to various environmental needs.
Protein channels are integral membrane proteins that create pathways for specific molecules to travel across cell membranes, crucial for maintaining homeostasis and facilitating cellular communication. The existence of hundreds of different protein channels can be attributed to the diverse needs and functions of cells in an organism.
1. **Specificity and Selectivity**: Different channels allow for the selective passage of specific ions or molecules, like sodium, potassium, calcium, and chloride ions, each essential for various physiological processes. For example, sodium and potassium channels are vital for nerve impulse transmission, while calcium channels play a key role in muscle contraction and neurotransmitter release.
2. **Regulation of Cellular Environment**: Cells need to maintain precise internal conditions. Protein channels help regulate pH, osmotic balance, and ionic gradients. Different channels respond to distinct stimuli such as voltage changes, ligand binding, or mechanical stress, ensuring appropriate responses to environmental changes.
3. **Specialized Functions**: Various cell types have specialized roles requiring specific channels. For instance, aquaporins facilitate water transport in kidney cells, while glucose transporters are crucial for energy supply in muscle cells.
4. **Evolutionary Adaptation**: The diversity of protein channels is also a result of evolutionary pressures. Organisms have evolved to adapt to various environments, resulting in a wide range of channels that meet specific survival needs.
In summary, the multitude of protein channels reflects the complex and varied requirements of cellular processes, enabling precise control over the internal environment and efficient communication within and between cells.
Evaluate the internal structure of a leaf as a location for photosynthesis
Answer:Leaves are a plant's main photosynthetic organs. Leaf structure is closely associated with its photosynthetic function. Leaves must permit carbon dioxide access to the photosynthetic cells but impede water from diffusing out. The oxygen that is a waste product of photosynthesis must be allowed to escape from the leaf.
The mesophyll cell is responsible for photosynthesis occurs. The majority of the chloroplasts and the primary site of photosynthesis are located in the palisade layer.
What are chloroplasts?The area of storage and gas exchange is the airy, spongy layer. The stomata control the water and carbon dioxide equilibrium.
For gas exchange and photosynthesis, leaves are suited. Since they have a wide surface area and stomata, which enable carbon dioxide to enter the leaf and oxygen to exit, they are well-equipped for photosynthesis.
Chloroplasts, which house the chlorophyll in plants, are where photosynthesis occurs. The thylakoid membrane, a third inner membrane that creates lengthy folds inside the chloroplast and is bordered by a double membrane, is present inside chloroplasts.
Therefore, the majority of the chloroplasts and the primary site of photosynthesis are located in the palisade layer.
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What consists of proteins joined together to create fiber like structures inside the cell
Answer:
Cytoskeleton
Explanation:
The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement. Cytoskeleton is made of filamentous proteins, and it provides mechanical support to the cell and its cytoplasmic constituents. All cytoskeletons consist of three major classes of elements that differ in size and in protein composition including microtubules, actin filaments and intermediate filaments.
A healthy way to gain weight would be to simply add more calories to your diet. Group of answer choices
Answer:
A healthy way to gain weight would be to simply add more calories to your diet is a TRUE statement.
Explanation:
The number of "calories" that an individual consumes and burns daily plays an important role in determining his/her weight. A person who consumes more calories than he burns daily could become overweight whereas if a person is consuming fewer calories than what he burns could cause him to lose weight.
The best way to gain weight is to "add more calories" to one's diet while also keeping in mind the number of calories being burnt daily. The newly added calories should sum up greater than the total calories burnt regularly.
Hence, the statement about adding calories in the diet to gain weight is true.
Answer:
True
Explanation:
natural philosophers have long pondered the underlying reasons for color in nature. One common historical belief was that colored objects in nature produced small particles that subsequently reaches our eyes. different objects produce different color particles thus contributing to their different appearance. is this belief accurate or not?
This belief is not accurate
Explanation:
The light wave of different frequencies or of a single frequency when reaches an object different occurrences take place. Such occurrences are- of light absorption, where an object absorbs the wavelength of light and the energy gets converted into heat; the light gets reflected by that object and it might be transmitted too.
An object looks colored because it absorbs the frequencies of a particular color and reflects it. It occurs because the material frequency of the object matches the light frequency and it is different in different object.
Final answer:
The belief that colored objects emit small color particles that reach our eyes is inaccurate. Modern physics teaches that color is due to the reflection and absorption of different wavelengths of light, as demonstrated by Sir Isaac Newton's prism experiments.
Explanation:
The historical belief that colored objects in nature produce small particles that subsequently reach our eyes, contributing to their different appearances, is not accurate according to modern understanding of physics and color perception. The nature of color in objects is due to the absorption and reflection of light. When white light (which contains the full spectrum of colors) hits an object, the object absorbs some of the light and reflects others. The color that an object appears to us is due to the wavelengths of light that are reflected and not absorbed. For instance, a red object looks red because it reflects the red part of the spectrum while absorbing other wavelengths.
In the seventeenth century, Sir Isaac Newton's experiments with prisms demonstrated that white light could be divided into visible spectrum colors, laying the groundwork for our understanding of color theory. This understanding was further extended by the concept of wave-particle duality in light, showing that light can exhibit properties of both waves and particles, but the idea of color particles specifically being emitted from objects to our eyes is a misconception.
What is the Thalweg? (site 2)
Answer:
The legal principle, if a boundary b/t 2 political entities is stated as a waterway
Explanation:
Answer:
The Thalweg is a line that connects points (the lowest ones) into cross sections. This is usually along coasts, rivers, or valleys.
Define the different types of organism relationships and give examples of each
Answer:
Predator prey relationship
Explanation:
I can only think of this at the moment and it is simply between predator and prey. The predator consumes the prey and this relationship has an effect on the food chain/ food web.
What percentage of the ocean have humans actually explored?
Even more than 80 percent of the ocean has never been mapped, explored, or even seen by humans.
What is Ocean?A continuous body of salt water that is enclosed in a sizable basin on the surface of the Earth is known as an ocean.
Nearly 71 percent of the surface of the Earth is covered by the major oceans and their peripheral seas.
Currently, contemporary sonar technology has only been used to map fewer than 10% of the world's oceans. Humans have never charted, explored, or even seen more than 80% of the ocean.
Compared to our own ocean floor, a much larger portion of the moon's and Mars' surfaces have been mapped and analyzed. Oceanographers have made some incredible discoveries previously, but there is still more to learn.
Thus, nearly 80 percent of the ocean is not explored.
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GETS BRAINILIST!!!!!What is the landform in the image? Image of a large area of flat or gently rolling land with low relief Dune Hill Lake Plain
Answer:
Hi! Your answer will be (D.) Plain.
Explanation:
Have a nice day!
Answer:
Plain :)
Explation:
Plains are a broad area of relatively flat land or one type of land on Earth, There are a lot around the world, about more than one-third of the land's area. :)
a specialized structure cell that has its own specific function is known as a blank
Answer:
An organelle
Explanation:
Newly formed cells in organism undergo structural modification so as to perform specific functions. Such cells are said to be specialised. An example is the palisade cell that is found beneath the upper epidermis of the leaf. They have numerous chloroplasts that contain chlorophyll to trap light energy for photosynthesis.
The specialized structure of the cell which performs its own function is called organelles.
Explanation:
Cell is the important units of the organism inside the cell, the material such as nucleus, cell membrane and cytoplasm is present, along with specialized structure is called organelles. Organelles are specified structure that performs the important cellular functions.
The chromatin is the material which is present inside the nucleus. The cell in the organism is used to maintain the energy flow in the body. The cell differentiation is the process in which the cell are generic, embryonic, to become a specialized cell.
carbon dioxde and atmospheric dust are minor components in Earth's atmosphere , but they play a role large role in climate change. Describe how carbon dixide can affect a change in climate.
Answer:
Carbon-di-oxide plays a major role in changing the climate.
Explanation:
Climatic change refers to new weather patterns being seen in the atmosphere. Carbon-di-oxide molecules absorb infrared radiations. So, they are said to absorb heat. This is the reason CO2 is even used for green house effect, in which heat from the sun is trapped causing the temperature to increase.
When carbon-di-oxide will increase, oceans will get warmer. This will lead to an increase in the water vapour. Thus, CO2 will eventually cause the Earth’s temperature to rise and hence causing global warming.
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Define and compare the relationship between the following principles. Provide a supporting example for each comparison.
Original Horizontality
Original Lateral Extension
Cross-Cutting Relationships
Inclusion
Uniformity.
This is Geology Btw
Original Horizontality- This principle stated by Nicholas Steno says that the gravitational pull deposits the sediment layers horizontally.
Original Lateral Extension- It states that a rock keeps on extending laterally unless a structural change prevents it.
Cross- cutting Relationships- This relationship states that if one geologic feature cuts another feature then it is younger of the two.
Inclusion- The inclusions observed in the sedimentary rocks if are in a formation then it concludes that the foundation is younger than the inclusion.
Uniformity- It states that all the geological processes are executed in a similar manner and a same intensity can be found in the past and in the present. This uniformity in the geological processes is enough for all the changes in geology.
The first two principles conclude that Earth was in the continuous process of formation and it still is because the deposit of layers and their constant extension and movements are the reason.
The inclusion and cross cutting are related as they both states about the sediment rock formations and the how it decides the ages of rock through changes. Uniformity is the bond that controls all the principles.
Final answer:
The principles of Original Horizontality, Original Lateral Extension, Cross-Cutting Relationships, Inclusion, and Uniformity are all important concepts in geology. These principles help geologists interpret rock layers and geological events.
Explanation:
Original Horizontality, Original Lateral Extension, Cross-Cutting Relationships, Inclusion, and Uniformity are all principles used in the field of geology to interpret rock layers and geological events.
The principle of Original Horizontality states that sedimentary rocks are originally deposited in horizontal layers. For example, when a sedimentary rock layer is found tilted or folded, it can be inferred that these deformations occurred after the rock layer was deposited.
Original Lateral Extension is a principle that refers to the lateral extension of sedimentary layers. If sedimentary layers are observed to extend laterally and become thinner away from the source, it indicates that these layers were originally deposited in a continuous horizontal fashion. The principle of Original Horizontality is closely related to this principle.
Cross-Cutting Relationships involve the observation of geological features, such as faults or igneous intrusions, cutting across existing rock layers. According to this principle, if a geological feature cuts through a rock layer, it is younger than the rock layer it cuts through. For example, if a fault is observed to cut through sedimentary rocks, the fault is determined to be younger than the sedimentary rocks it intersects.
Inclusions are fragments of one rock unit that are enclosed within another rock unit. The principle of Inclusion states that the rock containing the inclusions is younger than the rock that contains the inclusions. For instance, if a conglomerate rock contains pebbles of another rock type, it can be concluded that the conglomerate is younger than the rock from which the pebbles were derived.
Uniformity, also known as the principle of Uniformitarianism, is the concept that the processes and natural laws that operated in the past are the same as those observed today. This principle allows geologists to interpret past geological events based on present-day observations and processes.
1 Evolution may be described as a change in the inherited characteristics of a population
over time through a process of natural selection. Suggest whether evolution always results
in a new species, and a give a reason for your answer.
No, because evolution can also produce new......
No, because evolution can also produce new traits within a species without necessarily leading to the formation of a completely distinct species.
What is evolution?
Natural selection is evolution's process where advantageous traits help organisms survive and reproduce, shaping species characteristics over time.
No, because evolution can also produce new traits within a species without necessarily leading to the formation of a completely distinct species.
This can occur through adaptations to the environment or changes in the genetic makeup over time.
which statement describes the concept of uniformitarianism?
Answer:
Geological processes occurring today have always occurred in the past is a TRUE statement about uniformitarianism.
Hope this helps!
Do you simplify 6/36, if so, what would it be?
Answer:
yes and the answer would be
[tex] \frac{1}{6} [/tex]
Explanation:
It would be
[tex] \frac{1}{6} [/tex]
because you can divide by 6 from 6 to get 1 and you can divide 36 by 6 to 6 so you answe would be
[tex] \frac{6}{36} \div \frac{6}{6 } = \frac{1}{6} [/tex]
Which of the following modifications are most likely to result in the formation of euchromatin?
a. Demethylated DNA, and acetylated histones
b. Demethylated DNA and deacetylated histones
c. Methylated DNA, and acetylated histones
d. Methylated DNA and deacetylated histones
A
Euchromatic is the less densely packed regions of DNA that are accessible to transcription proteins and enzymes like RNA polymerase. Euchromatic have fewer nucleosomes (as a result of fewer histone complexes), unlike heterochromatic regions.
Explanation:
Acetylation of lysine residues in histones removes the positive charges of the residues that allow the histones tails to interact with the negatively-charged phosphates of DNA. This reduced interaction means fewer nucleosomes in the DNA region hence a more relaxed state (euchromatin) of DNA.
DNA methylation, on the other, is the addition of a methyl group to CpG regions of DNA. This makes the DNA more interactive with histone tails. The regions, therefore, become tightly packed into nucleosomes hence making it condensed and inaccessible to proteins and enzymes like RNA polymerase.
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Which statement best illustrates a biotic or an abiotic factor that is often found in a park
Explanation:
Complete question:
a.) Decaying leaves are an abiotic factor because they are not living.
b.) Rocks are an abiotic factor because they have never been alive.
c.) Water in ponds is a biotic factor, because it provides a habitat for living things.
d.) Oxygen is a biotic factor, because it is required for life and found in all living things.
option b is correct: b.) Rocks are an abiotic factor because they have never been alive.
An environment's biology includes both non-living, abiotic factors like atmosphere, water, soil, sunlight and temperature; and biotic factors which are living components of the ecosystem like plants, fungi, bacteria and animals. These factors interact within a community, and lead to a gradual change of an ecosystem over time.
Further Explanation:
The rock, is an abiotic component, made up of minerals or mineralized components; it is incapable of the mechanisms of growth, respiration, locomotion, excretion or reproduction that characterize living things.
a.) Decaying leaves are an abiotic factor because they are not living.
decay of plant matter involves biotic decomposers such as bacteria and fungi capable of allc.) Water in ponds is a biotic factor, because it provides a habitat for living things.
water, an abiotic factor, is a fluid comprised of molecules of dihydrogen monoxided.) Oxygen is a biotic factor, because it is required for life and found in all living things.
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