Directions: For each of the following, write either P for pioneer species or C for climax community in the
lines provided.
1. beech-maple forest
2. lichens
3. mosses and ferns
Directions: Complete the events chain about primary succession by placing the following entries in the
correct order.
Volcano erupts.
Animals arrive.
Lava forms new land
composed of rock.
Large plants grow.
Lava cools.
Lichens die and decay.
Soil forms.
Lichens and the forces of wind and
erosion help break down rocks​

Answer:

B

Explanation:

Based on the passage, if human cells had a lot of chlorophyll, they would most likely be green, hence option B is correct.

In a plant, chlorophyll's function is to absorb light, often sunlight. Two types of energy-storing molecules receive the light energy that is absorbed.

The plant uses its stored energy to turn water and carbon dioxide from the air into glucose, a form of sugar, through photosynthesis.

The thylakoid membrane contains the green pigment chlorophyll, and the region between it and the chloroplast membranes is known as the stroma.

Water is oxidized, which means it loses electrons, while carbon dioxide is reduced, which means it receives electrons, inside the plant cell. Water is converted into oxygen and carbon dioxide into glucose as a result.

Therefore, chlorophyll provides green color to the plants.

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Answer: I would say E

Explanation:

Is it multiple choice? If so then these are the answers, I think...

A. Each amino acid in a protein is coded for by three bases in the DNA.

B. Each gene codes for three proteins.

C.  Each triplet has many different meanings.

Answer:

complementary pairs of nitrogen bases

Explanation:

The rungs of the ladder are formed by complementary pairs of nitrogen bases (A with T and G with C)

To prevent the invasive species from entering texas freshwater ecosystem  the following steps should be taken they are described below.

Explanation:

The invasive species are dangerous to natural resources because they destroy the natural resources and ecological system.

These invasive species are controlled by the biological control and mechanical control.

Thus to prevent the invasive species from entering texas freshwater ecosystem the following steps are taken they are

Answer:

Explanation:

1. Cell specialization occurs due to the differential gene expression, it is the process which is responsible for the production of cells with different traits at different positions and at different time. This process changes cells  from simple to more specialized in  both structure as well as in function. This is all due to the differential gene expression where all cells beside containing the same gene, express different genes in different cells.

2. Cell differentiation is very important among almost all multicellular organisms. This process results in the  formation of a complex organism with different types of tissues and cells from a zygote.

Hello again!

If plants are purebred, then they are homozygous. This means that they have the exact same genes in one pair: for example, AA. If they are both purebred, then the dominant gene will win out every time. The answer for this question, then, would be D. Here is a diagram to help you!

Final answer:

When a pure bred purple flower pea plant is crossed with a white flower one, all F1 offspring will have purple flowers. In the F2 generation, a monohybrid cross predicts 75% of offspring with purple flowers and 25% with white flowers, as purple is the dominant trait.

Explanation:

In pea plants, the flower color is determined by a dominant and recessive allele. Purple flower color is dominant (represented by 'B') while white flower color is recessive (represented by 'b'). When crossing two pure bred plants, one with purple flowers (BB) and one with white flowers (bb), all offspring in the F1 generation will be heterozygous (Bb) and exhibit purple flowers due to the dominance of the purple allele.

To determine the expected phenotypes in the F2 generation, we perform a cross between two F1 plants (Bb x Bb). From this, a Punnett square would show that the expected probability of phenotypes in the F2 generation is 75% (three out of four) with purple flowers and 25% (one out of four) with white flowers. This aligns with Mendel's monohybrid cross results, which consistently showed a 3:1 ratio of dominant to recessive phenotypes in the F2 generation.

Therefore, the correct answer to the student's question is A. 75% purple, 25% white.

Environmental pressure:

Pressures resulting from human activities which bring about changes in the state of the environment.

Damages caused by overgrazing native and sown pastures, leading to loss of plant biodiversity and reduced crop yields.

Cactus species were under pressure from human activity, such as illegal trading, agriculture and aquaculture as well as land-use change.

Sharks must acquire food, escape predators, find mating partners and ensure the survival of their offspring.

Giraffes are quickly losing their living spaces.

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Environmental pressures for a rabbit include food scarcity and survival from predators, for a cactus it's primarily arid conditions with scarce water, sharks face pressures such as overfishing and climate change, and giraffes deal with a changing climate affecting vegetation and human encroachment on their habitat.

Environmental pressures are factors in an organism's habitat that can affect its survival. For a rabbit, these pressures may include food scarcity, predators, extreme weather conditions or changes in habitat due to human activities (for example, agriculture or construction). The rabbit's ability to hide or blend into its environment can be an important adaptation to these pressures.

For a cactus, environmental pressures consist primarily of arid conditions with sparse water resources. A crucial adaptation is its ability to store large amounts of water. Human activities that cause desertification or changes to soil conditions can also be environmental pressures.

Sharks face pressures such as overfishing, climate change that affects the temperature and acidity of ocean waters, and loss of prey due to changes in the ecosystem. Some sharks are adapted to withstand deep ocean pressure, but disturbances to their habitat present a significant threat.

Finally, for the giraffe, environmental pressures can include a changing climate that affects the types and availability of vegetation they eat, water scarcity, and predation. Human encroachment on their habitat through activities like logging is another key pressure. Their long necks, an evolutionary adaptation, aid in reaching food sources otherwise inaccessible.

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Answer:

It takes place in the absence of oxygen

Answer:

Occurs in the absence of oxygen.

Explanation:

Answer:

True

Explanation:

If all the organisms are the same, than a sickness that can kill one of them off will kill them all.

Answer:

The correct answer is option B. "Photosynthesis".

Explanation:

Photosynthesis is the process at which land plants produce energy from carbon dioxide in the presence of sunlight. This process is essential for plants, but also for all other living beings because photosynthesis allow plants to produce their own food (while other living beings feed from plants), as well as the production of oxygen as byproduct. The purple arrow indicate the absorption of atmospheric carbon dioxide by land plants, which belongs to the photosynthesis process. I attached the missing picture.

Answer:

B. Photosynthesis

Explanation:

The process in purple arrow indicate the process of photosynthesis.

Photosynthesis is carried out by green plants and it involves the use of carbon dioxide and water in the presence of light to synthesize glucose. The light energy needed for the reaction is absorbed by the green component of plants, the chlorophyll.

The process is summarized by the equation:

[tex]6CO_2 + 6H_20 + (energy) --> C_6H_{12}O_6 + 6O_2[/tex]

Hence, the purple arrow represents the diffusion of carbon dioxide into the vegetation as a precursor for photosynthesis.

The correct option is B.

Answer:

- production of vaccine for disease prevention

- production of genetically modified crops

Explanation:

Recombinant DNA is a special type of DNA that has been infused with a foreign gene of particular interest.

With recombinant DNA technology, scientists can study different proteins and see how they can be used for therapy in the area of medicine. The technology has been used to produce several vaccine in the prevention of diseases.

In addition, recombinant DNA technology has been useful in agriculture to produce genetically modified crops with desired traits such as resistance to pests/diseases and high yields.

Answer:

It is used to identify, map and derive the gene sequence and determine its function.

It is used to analyze gene expression in individuals' cells, and through the tissues of whole organisms. Recombinant proteins are widely used as reagents in laboratory experiments and to generate investigations to examine protein synthesis within organism cells.

It allows the possibility of using genetically modified microorganisms to produce drugs or other products of utility for man, among which can be mention: human insulin, growth hormone, interferons, obtaining new vaccines against hepatitis B5 and the vaccine against the human papilloma virus.

It has been possible to obtain transgenic plants resistant to insects, fungi, bacteria and herbicides, with better quality characteristics during post-harvest and with high nutritional content.

It has allowed the cloning.

Answer:

B. Does the purpose of the fluorescent zebra fish affect wether their development was morally acceptable?

Explanation:

It’s correct because I got it right

Applying the methods of science and engineering is not sufficient for answering the question which is as follows:

Thus, the correct option for this question is B.

Fluorescent zebrafish may be defined as a type of fish that emit certain types of coloration. They come in a variety of fluorescent colors such as red, pink, orange, green, blue, and purple. These colors a called Starfire Red, Electric Green, Sunburst Orange, Cosmic Blue, Galactic Purple, and Moonrise Pink.

These fishes endowed them with genes from fluorescent jellyfish (for blue and green colors) and coral (for red). They inserted the gene into a zebrafish embryo, allowing it to integrate into the zebrafish's genome, which caused the fish to be brightly fluorescent under both natural white light and ultraviolet light.

All the given questions were significantly answered except for the purpose of the fluorescent zebra fish effect and whether their development was morally acceptable. Thus, the correct option for this question is B.

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Answer:

3. Use a systematic method to name, organize, and show relationships among species

The main purpose of biological taxonomy, use a systematic method to name, organize, and show relationships among species.

Linnaeus invented binomial nomenclature, the system of giving each type of organism a genus and species name. He also developed a classification system called the taxonomic hierarchy, which today has eight ranks from general to specific: domain, kingdom, phylum, class, order, family, genus, and species.

Thus, option "3" is correct.

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Answer:Tanning Beds: UV rays

X-rays: Radiation

Cigarettes: Chemicals

I hope this helps

Explanation:

Answer: B.) UV rays  A.) radiation  C.) chemicals

Explanation: i hope this helps :)

Answer:

A, B, E

Explanation:

more controversy is likely due to the sensitivity of each topic, as well as political views surrounding these topics.

Answer:

Senses that its too cold and turn the heat on and warm it up

Explanation:

Answer:

I think it's B.

Explanation:

In plasmas, Ions moving independently in large space

Amelia Ions moving independently in large space, defines plasma which is one of the state of matter.

Matter is everything which satisfies  two conditions  such as mass and volume.  For example atoms.

In solids, the particles are close to each other, strong attractive forces. It has a definite volume and  shape.

Solids have different properties like elasticity, plasticity, rigidity, malleability, ductility, conductivity, it can be amorphous and crystalline.

Liquid is is link between solids and gases, Intermolecular forces are stronger than gases but weaker to solids.

They have high density, flowability, conductivity, viscosity, refractive index, surface tension.

Gases have no shape and volume, the velocity is much higher relative to liquids and gases.

Gas have lowest density, pressure, temperature, viscosity and it can liquefy under compression called as condensation.

Plasma does not exist in normal condition. when gas is heated to extreme temperature, plasma formed. It is also called as ionization of the gas.

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Final answer:

The primary difference between the domains Eukarya and Bacteria is that Eukarya contains organisms with cells that have nuclei and other organelles, while Bacteria consists of single-celled prokaryotes without nuclei, with genetic material that is not membrane-bound.

Explanation:

The domain Eukarya is one of the three domains of life, alongside Bacteria and Archaea, in the classification system of organisms. The chief distinction between the domain Eukarya and domain Bacteria lies in cellular organization. Organisms within the domain Eukarya possess cells with nuclei, where their genetic material is encased in a membrane-bound nucleus, and they also contain other membrane-bound organelles. These organisms range from unicellular protists to multicellular fungi, plants, and animals. In contrast, the domain Bacteria comprises entirely of single-celled prokaryotic organisms that do not have a nucleus. Instead, their genetic material freely floats within the cell, unbounded by a membrane. Bacteria have diverse lifestyles and can be found in nearly every environment on Earth, including some that are inhospitable to most other life forms. Additionally, bacterial cell walls are characterized by the presence of the polysaccharide peptidoglycan. To summarize, the significant differences between the domains Eukarya and Bacteria include cellular structure (presence or absence of a nucleus), complexity (single-celled vs multicellular), and the composition of their cell walls. The addition of the domain taxon is indicative of the constant evolution of scientific understanding, reflecting the fundamental differences discovered between various forms of life.

Darwins theory of evolution explains how modern organisms evolved over long periods of time through descent from common ancestors.  Darwin meant that different, yet ecologically similar, animal species inhabited separate, but ecologically similar, habitats around the globe.

Darwin's theory of evolution by natural selection explains that species evolve over time due to inherited beneficial traits increasing in frequency among populations, this is based on his critical observations and the principle of common ancestry.

Charles Darwin's theory of evolution has greatly enhanced our understanding of the natural world. It explains the process of evolution, which states that all living organisms are descended from earlier forms of life, and the mechanism of natural selection, which describes how species change over time. Natural selection posits that organisms with beneficial traits are more likely to produce offspring, leading to the prevalence of these traits in future generations. Darwin's extensive observations, particularly on the Galápagos Islands, were fundamental to the development of his theory. These observations, alongside his understanding of common ancestry, allowed Darwin to clarify why there is such vast biodiversity on Earth and how species can adapt to environmental changes.

The theory of evolution by natural selection answers fundamental questions in all branches of biology, from genetics to ecology, and has broad applications in fields such as agriculture, medicine, and conservation biology. It implies that present-day species evolved from common ancestors, and it explains the differences and similarities observed among organisms due to environmental pressures and changes.

Answer: they just are and because they use the sun

Explanation: not sure at all tho

Solar cells are different from most other power sources because they utilize the sun's energy, have a smaller environmental impact, are scalable, becoming more cost-effective, and require minimal maintenance. These factors contribute to the growing popularity and importance of solar power as a sustainable and reliable source of electricity.

Solar cells, also known as photovoltaic cells, are different from most other power sources in several ways. Here are the key differences:

1. Energy Source: Solar cells convert sunlight directly into electricity, making use of the photovoltaic effect. This means that they rely on the abundant energy from the sun, which is a renewable and sustainable source. In contrast, most other power sources, such as fossil fuels or nuclear power, rely on limited resources that can be depleted over time.

2. Environmental Impact: Solar cells have a much smaller environmental footprint compared to most other power sources. Fossil fuel-based power plants emit greenhouse gases and contribute to air pollution, which leads to climate change and other environmental issues. Solar cells generate electricity without any emissions, making them a cleaner and more environmentally friendly option.

3. Scalability: Solar cells can be easily scaled up or down to meet different energy needs. They can be installed on rooftops, in large solar farms, or even integrated into portable devices. This flexibility allows solar power to be used in various applications, from powering homes and businesses to providing electricity in remote areas. In contrast, many traditional power sources require large infrastructure and are less adaptable to different settings.

4. Cost: While the initial cost of installing solar panels may be higher compared to traditional power sources, solar energy has become increasingly affordable in recent years. The cost of solar cells has significantly decreased due to advancements in technology and increased production. Additionally, solar energy has the potential for long-term cost savings since sunlight is free and abundant, reducing reliance on expensive fuel sources.

5. Maintenance: Solar cells require minimal maintenance compared to most other power sources. Once installed, solar panels typically require only occasional cleaning and inspections. In contrast, fossil fuel power plants require regular maintenance and are prone to breakdowns, which can lead to power outages and disruptions.

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This stimulant accelerates excitability by strengthening the synaptic connection at synaptic junctions by an increase in neurotransmitter levels.

The stimulants counteract the effects of weariness on both mental and physical tasks. Therapeutic doses of stimulants can cause euphoria, prolonged wakefulness, and appetite loss.

The medication is a stimulant that boosts synaptic connections by raising the quantity of neurotransmitters at synaptic junctions, which improves the rate of excitability.

This quickens the aging process. resulting in early aging. Long term, it may have an impact on cardiovascular system overall and cardiac performance.

By preventing blood flow to the liver over time, this could harm the liver. Additionally, it might have an inhibiting influence on the liver's detoxifying processes. This results in liver failure.

Muscles that oppose one another in action are said to be antagonistic. When one relaxes, the other contracts. In order to move, bones must move in unison.

The bone is dragged as one contracts and the other relaxes, shifting the bone's position to enable movement. Keep in mind that a muscle cell typically pulls in one direction.

Red blood cells are nucleus-free, have a bi-concave shape that allows them to fit through tiny capillaries to reach tissues, and have a vast surface area for delivering oxygen molecules.

Only a state of substance that is gaseous may be compressed. Because of the strong intermolecular interactions and the tightly packed molecules of solids, it cannot be squeezed at the solid state.

The way that ice affects density the density of ice is lower than that of water because of the lattice structure of the water molecules in ice.

The force that pulls water through the mains and into the pipes might lead to aircraft. The force per unit area that raises water to a height of 10 meters is equivalent to 1 bar.

To overcome the aerodynamic deterrent, there is pressure to provide a forward force. The thrust from the propeller engine ensures a constant speed that is high enough to overcome the drag.

Thus, this is the basic answers for the given scenario.

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Answer:

The correct answer is option C) "Osmosis is an active transport process that moves water against the concentration gradient".

Explanation:

Osmosis is defined as a passive transport process, because it does not require energy to occur. Osmosis takes place when water moves from an area of high concentration to an area of low concentration. Therefore, it is false to affirm that osmosis is an active transport where water moves against its concentration gradient, actually the opposite is true about osmosis.

Answer:

18-35

Explanation:

Final answer:

The amount of hydrogen in the sun will decrease over the next few million years due to the ongoing nuclear fusion of hydrogen into helium. As the sun's hydrogen supply diminishes, it will lead to an increase in brightness and size, eventually culminating in the sun evolving into a red giant and finally a white dwarf.

Explanation:

The amount of hydrogen in the sun will decrease over the next few million years. This is because the sun is currently in a stable part of its lifecycle known as the main sequence, where it is constantly converting hydrogen into helium through nuclear fusion at its core. Approximately 600 million tons of hydrogen are converted to helium each second, which releases the energy that we see as sunlight. As this process continues, the sun will eventually exhaust its hydrogen fuel, leading to significant changes in its structure and energy output.

This continuous decline in hydrogen leads to an increase in the core's helium content, causing the core to contract and heat up. Contracted and heated cores result in increased pressure and temperature, which in turn increases the rate of fusion. However, this does not create more hydrogen; rather, it speeds up hydrogen consumption and results in the sun growing larger and gradually brighter.

Ultimately, the hydrogen fuel that is hot enough for fusion will be exhausted, and the sun will go through dramatic changes, including becoming a red giant. This transformation into a red giant will mark the end of the sun's lifetime as we know it, as it will eventually shed its outer layers and leave behind a core in the form of a white dwarf, completely devoid of hydrogen fuel for nuclear fusion.

All the different perspectives in psychology allow psychologist to look at psychological issues from different points of view. Therefore, the correct option is A.

The different perspectives in psychology represent theoretical approaches to understanding human behavior and mental processes. Some major perspectives in psychology include:

It is important to note that these perspectives are not mutually exclusive and are often used in combination to understand complex psychological issues. Therefore, the correct option is A.

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Answer:

Chemical reactions convert reactants into products. In nonliving systems, the presence of a(n) catalyst allows the reaction to proceed very quickly and have a lower activation energy. In living systems, this functions is carried out by proteins called enzymes.

Answer:

Ribosomes are a cell structure, it makes protein

Answer:

Ribosomes are the site where  polypeptide chains are produced through protein synthesis.