We have seasons because the earth is tilted as it makes its way around the sun. So its always pointed in one way at the sun, causing different asmophere as we go around the sun.
The body plan of platyhelminthes is less advantageous than nematode because _______. Select one: a. it has flame cells b. it has no circulatory system c. it has no pseduocoelom d. it has radial symmetry
Answer:
The correct answer is option c, that is, it has no pseudocoelom.
Explanation:
Platyhelminthes are also known as flatworms. They are generally parasitic, these are triploblastic species with bilateral symmetry. In Platyhelminthes, flame cells do the function of excretion, however, these species are devoid of a circulatory system. On the other hand, nematodes are also known as roundworms and like Platyhelminthes, the nematodes are also diploblastic species with bilateral symmetry.
However, Platyhelminthes are acoelomate, on the other hand, nematodes are pseudocoelomate species. The Platyhelminthes lack a complete digestive system, while nematodes have a complete digestive system. Thus, it can be stated that the body plan of Platyhelminthes is less advantageous in comparison to nematodes because of no presence of pseudocoelom.
Why has the classification of organisms changed over time?
Final answer:
The classification of organisms has changed over time due to advances in genetic analysis and a deeper understanding of evolutionary relationships, which have led to adjustments in taxonomy to reflect more accurate phylogenetic connections.
Explanation:
The classification of organisms has historically been based on observable characteristics and shared traits. However, as our understanding of microorganisms and evolutionary biology evolves, especially with advancements in genetic analysis, the taxonomy of living organisms continues to undergo refinement.
The Linnaean classification system has been used for over two centuries to categorize organisms, but recent studies, particularly in genetics, have provided insights that challenge previous phylogenetic relationships. For instance, molecular analyses have revealed unexpected evolutionary connections, like the closeness of hippos to whales instead of pigs. Hence, the phylogenetic trees, which represent hypotheses of evolutionary relationships, are updated with new data.
This progression in our knowledge impacts the classical taxonomy and necessitates changes to ensure that our understanding of life's diversity reflects its true evolutionary past and genetic relationships, avoiding misleading groupings based solely on physical resemblance.
When a peeled banana turns black, it is a __
thermal change
physical change
change of state
chemical change
Answer: chemical change
Explanation: The banana itself is going to exhibit different properties (it turns black) chemically. Thermal change describes heat, physical change describes it when the chemical properties remain the same. change of state is like liquid to gas. hope this helps
the aorta is the largest artery in the body. The blood leaving the aorta is full of ___________.
A: oxygen
B: red blood cells
C: white blood cells
D: carbon dioxide
Answer:
the answer is A, oxygen
Explanation:
Arteries carry oxygen-rich blood away from the heart to different parts of the body, so the blood leaving the aorta would be full of oxygen.
identify the characteristics of protists.
check all that apply
multicellular
unicellular
autotrophic
heterotrophic
mobile
stationary
prokaryotic
eukaryotic
Answer:
Everything but prokaryotic.
Explanation:
EDGE2021, Goodluck:)
All given points are characteristics of protists except prokaryotic
Protist:It is any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share certain morphological and physiological characteristics with animals or plants or both.
Examples of protists include algae, amoebas, euglena.
Most have mitochondria.
They can be parasites.
They all prefer aquatic or moist environments.
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Question:
How do transgenic animals contribute to human welfare? Include one agricultural application and one health related application.
Calculate the percent increase in HFC emissions between the years 2005 and 2015. A) 10% B) 50% C) 100% D) 200%
Answer:100%
Explanation:
Answer:
C) 100%
Explanation:
What should the Oreos and mice researchers do next to increase the credibility of their research?
Answer: The should gather all the data the collected on the Oreos and mice and make sure all of there data is still factual information.
Final answer:
The Oreos and mice researchers should ensure that their results are replicable by independent research, provide extraordinary evidence for extraordinary claims, and communicate their findings responsibly by contextualizing them within existing research and including outside expert opinions.
Explanation:
To increase the credibility of their research, the Oreos and mice researchers should take several key steps that align with robust scientific principles. First and foremost, they should ensure that their research results can be replicated by independent research teams. To achieve this, the researcher must provide enough detail about their experimental process so that it can be precisely duplicated. They should also aim to have their findings replicated across a wide range of conditions to verify the consistency of results.
Additionally, it is crucial that any extraordinary claims derived from their research are supported by extraordinary evidence. This means that the claims should be backed by multiple independent studies before being widely accepted. The researchers should also aim to build a corpus of studies on the phenomenon they are investigating to provide a more solid foundation for the findings.
To responsibly communicate their findings to non-experts, including journalists and the general public, the researchers should contextualize new findings within the broader landscape of existing research. Including comments from outside experts in any reporting can provide additional context and highlight the potential limitations of the study. Finally, educating consumers of science, including journalists, about the importance of replication and skepticism in science can help moderate expectations and promote a more accurate understanding of scientific progress.
Which of the following has the element correctly matched with its
description? *
O
Phosphorous: Most abundant gas in the atmosphere
O
Carbon: Basis for all living things, every living thing contains this element
Oxygen: A unique element that distinguishes nucleic acids from the other
biomolecules
O
Nitrogen: A element only found solely in storage sites of plants and soil
Answer:
Carbon: Basis for all living things, every living thing contains this element
Explanation:
The only element that is correctly matched with its description is carbon.
Carbon forms the basis of all living organisms. It is an important component if major biomolecules of life such as carbohydrate, protein, nucleic acids, etc.
Phosphorus is not the most abundant gas in the atmosphere. The most abundant gas is nitrogen, making up about 78% of the atmospheric gases.
Oxygen does not distinguish nucleic acids from other biomolecules and nitrogen is found in other substances apart from storage sites of plants and soils.
The correct option is carbon which forms the basis of all living organisms.
Moving water, wind, sunlight, and heat from inside the Earth are all sources of renewable energy. What is the main benefit of using this type of energy? There is no benefit because we are using the Earth's resources and this harms the environment. The benefit of using renewable energy is that we are not burning fossil fuels. This increases the amount of carbon dioxide in the environment. The benefit of using renewable energy is that we are not burning fossil fuels. This decreases the amount of carbon dioxide in the environment. The benefit of using renewable energy is that we burn fossil fuels while extracting the energy and release carbon dioxide into the environment.
Answer:
I can not really see the options, but i will say it is because renewable resources do not run out and are better for the earth
Explanation:
Solar power is unlimited and does not need to be turned into electricity through a long process, it is ready right away
Wind power does no damage since you are not taking air, the air moves the wind machines and the movement makes electricity
Hydro power is the similar to wind power, the water pushes a wheel i believe to create energy.
Fossil fuels are bad for the earth for many reasons:
1. they are non-renewable meaning eventually they will run out
2.the gases that are released because of it are bad for the atmosphere
3.artifacts and fossils are lost
i hope this helps u
pls give a brainliest and a thx ;)
The main benefit of using renewable energy is that it decreases the amount of carbon dioxide and other greenhouse gas emissions in the environment, which is the sixth sentence.
What is renewable energy?Renewable energy sources have several benefits over non-renewable energy sources. The most significant benefit is that renewable energy sources do not produce greenhouse gas emissions, unlike non-renewable sources such as coal, oil, and natural gas. These greenhouse gas emissions contribute to global warming and climate change, which can have significant impacts on the environment, human health, and the economy.
Hence, the main benefit of using renewable energy is that it decreases the amount of carbon dioxide and other greenhouse gas emissions in the environment, which is the sixth sentence.
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Which process occurs the same
number of times in both mitosis and
meiosis?
Answer:
Both mitosis and meiosis are processes of cell division.
Explanation:
They use the same steps for cell division, including prophase, metaphase, anaphase and telophase.
Mitosis and meiosis are the cell separation and distribution steps that are required for cell replication, proliferation and growth.
The steps of prophase, metaphase, anaphase and telophase happen both in mitosis and meiosis.
Mitosis is a process in which the cell splits and two alike daughter cells are formed.This type of division happens in all the bodily cells for the process of growth and to substitute the dead cells.Meiosis is a decreased selection process in which the diploid cell gets parted into four daughter cells carrying a haploid number of chromosomes.The generative cells like eggs female and sperm in the male are the cells where meiosis occurs.Therefore, both processes have the same stages of karyokinesis and cytokinesis.
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Definition: The process of one gamete (sex cell) joining another. Example: Sperm and egg forming an zygote.
Answer: fertilization
Explanation:
The question refers to the process of fertilization in sexual reproduction, where a sperm cell merges with an egg cell to form a zygote.
Explanation:The process referred to in the question is the process of fertilization. This is a vital process in sexual reproduction that occurs when a sperm cell from the male merges with an egg cell from the female to form a single cell, which is called a zygote. The newly formed zygote contains genetic information from both parents, which allows for the child to have a combination of traits from both parents. This is a fundamental process in biology that ensures genetic diversity.
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A scientist is observing a eukarotic cell and a prokaryotic cell. Which structure could she only observe in the eukaryotic cell?
Answer:
A well defined nucleus and cell organelles.
Explanation:
Eukaryotic organisms are those organisms which have true nucleus or membrane around the nucleus in its cell. In eukaryotic cells organelles such as mitochondria, ribosome, lysosomes, endoplasmic reticulum, golgi bodies and vacuoles are present. In prokaryotic cell, all the activities are performed by a single cell while in eukaryotic cell, organelles are present which performs specific functions.
Answer:
A
Explanation:
Because I just got it right
When is cladistics more useful than Linnaean taxonomy?
O
A. When you want to determine the order of evolution
B. When you want to group organisms by traits
C. When you want to find the phylum an organism is in
D. When you want to find organisms that look similar
PLA HELPPPP
Cladistics is more useful than Linnaean taxonomy when determining the order of evolution because it analyzes ancestor-descendant relationships and constructs phylogenetic trees, showing how species are related over time.
Explanation:The question asks, 'When is cladistics more useful than Linnaean taxonomy?'
If we consider what cladistics and Linnaean taxonomy are designed to do, cladistics is a method that is employed to decipher the ancestral-descendant relationships between species by comparing shared traits, and it is centered on the construction of phylogenetic trees or cladograms. In contrast, the Linnaean system classifies organisms based on observable physical traits, regardless of their evolutionary history. When we are concerned with understanding the evolutionary history or the order in which species have evolved, cladistics—and the clades it identifies—is demonstrably more informative. Therefore, the answer is A. When you want to determine the order of evolution.
Given the context, it becomes clear that phylogenetic classification through cladistics offers a framework to understand how species evolved over time, essentially providing a visual representation of these evolutionary relationships in the form of a tree, whereas Linnaean taxonomy might group organisms together based on similarities that might not reflect their evolutionary ancestry. For a robust understanding and classification that reflects evolutionary relationships, cladistics is often more useful than the Linnaean system.
Which crops are harvested for biomass production?
Answer:
Energy Crops:
Grains and Starches: sugar cane, corn, wheat, sugar beets, industrial sweet potatoes, etc.
Why is symbiosis important to ecosystem functioning? Explain.
Answer:
Symbiotic relationships are important because they are a major driving force of evolution.
Explanation:
This networking and cooperation among species allows them to survive better than they would as individuals.
Your welcome :)
Final answer:
Symbiosis is crucial to ecosystem functioning as it often results in enhanced survival, establishment of nutrient cycles, and productivity of biomass between species. It influences resource competition, biodiversity, ecosystem structure, and resilience. Understanding these relationships is vital for ecosystem management and conservation efforts.
Explanation:
Symbiosis is critically important to ecosystem functioning because it often enhances the survival and productivity of biomass among different species. In a symbiotic relationship, organisms closely interact and usually at least one benefits, but there can be mutual benefits, neutral effects or even harm to the other. For example, nitrogen-fixing bacteria establish symbiotic relationships with leguminous plants, providing them with essential nitrogen in exchange for nutrients and a home. This interaction contributes to the nutrient cycle essential for ecosystem productivity.
Furthermore, symbiotic relationships such as those between microbes and plants or epiphytes and their host plants are central to maintaining ecological balance. These relationships allow for efficient nutrient exchange and can increase plants' resistance to environmental stressors, playing a pivotal role in the functioning of the ecosystem.
The significance of symbiosis extends beyond individual species, as it influences competition for resources, biodiversity, and the structure and resilience of ecosystems. Therefore, understanding symbiotic relationships is essential for conservation efforts and the sustainable management of ecosystems.
A set of diagrams. The bottom is labeled Age in years. A log underground with many arrows representing movement from the log to aboveground, at 100 percent; Age is 0 years. A log underground with fewer arrows representing movement from the log to aboveground, at 50 percent; Age is 5,730 years. A log underground with four arrows representing movement from the log to aboveground, at 25 percent; Age is 11,460 years. A log underground with two arrows representing movement from the log to aboveground, at 12.5percent; Age is 17,190 years. Which statements describe the image? Check all that apply.
A) The wood is releasing argon gas.
B) This information is useful for dating ancient rock.
C) The process works only with organic matter.
D) The element has a half-life of 5,730 years.
E) This shows the half-life of carbon-19.
Answer:
C) The process workd onlu with organic matter
and
D) The element has a half-life of 5,730 years
Explanation:
Just took a test on this
Answer:
C) The process workd onlu with organic matter
and
D) The element has a half-life of 5,730 years
Explanation:
1.3 kilometre =
centimetre
Answer:
130 000 cm
Explanation:
1 km = 1000 m
1 m = 100 cm
1.3 km = 1 300 m
1 300 m = 130 000 cm
Answer:
130000cm or in scientific notation = 1.3 × 10^5 cm
Explanation:
1km = 10000cm
1.3(10000) = 130000cm
What does a plant stem do
Answer:
A plant's stem is what the plant uses to carry water and nutrients up or down. It also supports the plant and conducts glucose to other parts of the plant.
Explanation:
Answer:
A Plant stem carries out vital resources to the rest of the plant.
Explanation:
Carrying out vital functions such as the transportation of water, food, and nutrients to the rest of the plant. These transportations are done by the xylem ( carries water ), and the phloem ( carries nutrients ). The plant also supports the plant and firmly fixes it in one area in the soil. Depending on the plant's structure, the plant stem may be rigid, sturdy, or flexible.
Hope this Helps!
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A tetraploid cell that divides by meiosis produces; Apply the concept you know about meiosis to answer this question.
Answer:
Diploid gametes
Explanation:
A tetraploid cell is a cell that has four sets of chromosomes i.e. 4n. Meiosis is a kind of cell division that reduces the chromosomal number of the daughter cells (gametes) by half.
Hence, a tetraploid cell will undergo meiosis to produce daughter cells (gametes) that have a diploid number of chromosomes each (2n). Since Meiosis is a reduction division, it occurs in a two-step division process viz: Meiosis I and II. Meiosis I involves separation of homologous chromosomes while meiosis II involves separation of replicated chromosomes.
In this case, a tetraploid (4n) will have two sets of chromosomes separated into opposite cells during meiosis I. This reduces the chromosome number into 2n (diploid).
When the sea floor collides with the continental floor.
dome mountains are formed
both floors fold inward, forming a mountain range
the sea foor ships below the continental foor
the continental floor gets pushed into the mantie
When the sea floor collides with the continental floor, a process called subduction occurs. The sea floor, being more dense, sinks below the continental floor. This does not form a mountain range or domed mountains but can lead to geologic activity like earthquakes and volcanoes.
Explanation:When the sea floor collides with the continental floor, a process known as subduction occurs. This is a geological event that happens at convergent boundaries where one tectonic plate moves under another and is forced or sinks due to gravity into the mantle. The denser sea floor sinks or 'subducts' beneath the less dense continental floor, forming a deep ocean trench. This subduction can also cause intense pressure and heat, leading to the creation of volcanoes and earthquakes. While both floors do not fold inward to form a mountain range, the continental floor does not get pushed into the mantle. The pressure and heat may, however, lead to the formation of mountains on the continental crust, albeit not domed mountains specifically.
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The Yellowstone National Park Food Web Is Shown Below
what would be the most likely effect of adding wolves to the park?
A. Increased Elk population
B. Decreased cottonwood population
C. Increased Aquatic Plant Population
D. Decreased Maple Population
The most likely effect of adding wolves to the park will be an increased Aquatic Plant Population (Option C).
What are primary producers?Primary producers are organisms capable of synthesize their own food by a process called photosynthesis.
In this case, the prey target (moose) of wolves eat primary producers (aquatic plants).
In conclusion, the most likely effect of adding wolves to the park will be an increased Aquatic Plant Population (Option C).
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Adding wolves to Yellowstone National Park would most likely decrease the elk population. Wolves are a keystone species, and their reintroduction has led to increases in biodiversity and the health of the park's ecosystem.
Explanation:Based on the information provided, it can be concluded that the most likely effect of adding wolves to the Yellowstone National Park would be a decreased elk population. This is because wolves, being apex predators, directly affect the population of prey species like elk. When wolves were reintroduced to Yellowstone National Park in 1995, the elk altered their grazing behavior to avoid predation. As a result, they stopped grazing in exposed stream and riverbeds, allowing willow and cottonwood seedlings to grow. This indirectly led to an increase in biodiversity and improved the health of the park's ecosystem.
Furthermore, this change in elk behavior had other effects. The regrowth of vegetation in riparian areas, which the elk had previously overgrazed, provided habitat for other animals and notably led to the recolonization of areas by beavers. Summarily, the reintroduction of a keystone species like the wolf had considerable effects on the overall integrity and biodiversity of the Yellowstone ecosystem.
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If the mRNA was incorrectly made during transcription what would happen to the protein?
A.The mRNA would not be translated
B.It would definitely differ from the intended amino acid sequence
C.It could differ from the intended amino acid sequence.
D.There could not be any change to the protein
Answer:
C. It could differ from the intended amino acid sequence.
Explanation:
There are many different types of mutations when considering the transcription of DNA to mRNA. Frameshift mutation, which changes the length of the sequence, and point mutations, which affects only one amino acid both can affect what happens to the protein. However, point silent mutations affect only one amino acid and it doesn't actually change what the amino acid is, the code changed, but not the amino acid expressed. For example, if the mRNA code of GUU was incorrectly made to be GUC, the amino acid would still be valine. There are times where the amino acid is changed or the code is changed and doesn't work such as GUU incorrectly being made to AUU and the amino acid ileum is made instead of valine, but the change of an mRNA sequence doesn't always affect the expressed amino acid sequence.
gene that is not expressed-it is hidden or masked by another
Answer: Recessive
Explanation:
Answer:
recessive
Explanation:
the law of dominance states when a dominant and recessive genes are placed together the dominant one will always show
Which statement describes electromagnetic waves with
wavelengths greater than 700 nanometers?
O They take the form of heat.
They can cause skin cancer and sunburn.
They are some of the shortest waves.
O They can be seen by human eyes as visible light.
Answer:
The answer is that they take the form of heat. they can cause skin cancer and sunburn.
Explanation:
The statement that describes electromagnetic waves with wavelengths greater than 700 nanometers is that they can be seen by human eyes as visible light, that is the last option.
What are electromagnetic waves?Electromagnetic waves are a type of wave that consists of oscillating electric and magnetic fields that propagate through space, and they can have different wavelengths and frequencies, and visible light is a type of electromagnetic wave that has a wavelength range of approximately 400 to 700 nanometers, and this range is visible to the human eye. Electromagnetic waves with shorter wavelengths than visible light, such as ultraviolet radiation, X-rays, and gamma rays, have higher frequencies and carry more energy.
Hence, the statement that describes electromagnetic waves with wavelengths greater than 700 nanometers is that they can be seen by human eyes as visible light, that is the last option.
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write down one way that an animal loses some of energy it gets from a plant . please can someone help you get 20 points .
Answer:
There are several ways in which animals losses energy such as movement from place to place, muscle movement and respiration etc.
Explanation:
When animals such as deer, cow, rabbit etc feed on plants. Only 10 percent of energy is transferred from plants to the animal and the remaining is lost as heat energy in the atmosphere. This 10 percent of energy is used by the animals in muscle building and performing other activities such as movement and respiration. In respiration process, food molecules are broken down to produce energy and this energy is used in different processes.
Final answer:
The energy that animals obtain from plants is mostly lost as heat due to metabolic processes, with only about 10% retained in the animal's body tissue.
Explanation:
One way that an animal loses some of the energy it gets from a plant is through heat release during its metabolic processes. When an herbivore eats a plant, it uses the energy to maintain its bodily functions, such as movement, growth, and reproduction. During these activities, most of the energy is used and converted into heat, which is then lost to the environment. This is a demonstration of the second law of thermodynamics, which states that energy transfer leads to a loss of energy through heat. Only about 10% of the energy is retained and transformed into body tissue, while the rest is expended.
Which type of dialysis best mimics the kidney’s natural function?
A. Hemodialysis
B. Peritoneal dialysis
C. Nocturnal dialysis
D. Dialysis using an artificial kidney
Answer:
A. Hemodialysis
Explanation:
Hemodialysis is the method or process of using a dialysis machine (a special machine) to clean the blood.
This is done by doing a minor surgery on the patient to get the blood into the dialyzer.
This dialysis machine does the work a healthy kidney would do.
Which best describes a bird’s role as it eats seeds?
Here is ur answer:
If a bird eat seeds it's likely to contribute in a natural process of transferring of seeds from once place to another and hence, it helps in transfer of seeds of various plants to different places which led to biodiversity in plants in a particular place or region.
I would most likely say niche. I hope I got it right!
Describe the main difference
between weather and climate.
Answer: Easy my friend Whereas weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area. Different regions can have different climates. ... Weather tells you what to wear each day.
Explanation:
Match each idea about evolution to the person or group where it originated from the drop-down menu. All living things share a common ancestor. More offspring are born in a population than can survive. All living things are related and change over time. Acquired traits can be inherited. Change is driven by competition and sexual selection. Organisms strive for perfection.
Answer:
Erasmus Darwin
Thomas Malthus
Ancient Greeks and Romans
Jean-Baptiste
Erasmus Darwin
Jean-Baptiste
Explanation:
The correct match evolution to the person or group where it originated:
All living things share a common ancestor. Erasmus Darwin.More offspring are born in a population than can survive. Thomas Malthus.All living things are related and change over time. Ancient Greeks and Romans.Acquired traits can be inherited. Jean-BaptisteChange is driven by competition and sexual selection. Erasmus Darwin.Organisms strive for perfection. Jean-BaptisteWhat is evolution?In biology, evolution is the alteration in a species' traits over a number of generations and depends on the method of natural selection. A population's genetic makeup evolves over time as a result of the process of evolution.
Adaptations made by organisms to their altering environments are reflected in evolution, which can lead to altered genes, unique features, and the emergence of new species.
Therefore, the correct options are:
Erasmus DarwinThomas MalthusAncient Greeks and RomansJean-BaptisteErasmus DarwinJean-BaptisteTo learn more about evolution, refer to the link:
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