Environmental pressure, also known as selection pressure or ecological pressure, refers to the influence exerted by the environment on living organisms, driving the process of natural selection.
It encompasses various factors, such as climate, competition for resources, predation, and other ecological interactions.
Environmental pressure plays a pivotal role in shaping the characteristics and traits of organisms within a population.
Individuals possessing advantageous traits that align with the environmental conditions are more likely to survive, reproduce, and pass on these beneficial traits to the next generation.
Over time, this process leads to the adaptation and evolution of species, enhancing their ability to thrive and succeed in their specific ecological niches.
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Why are differences and similarities in DNA and proteins evidence of evolution?
Answer:
Homologous structures provide evidence for common ancestry analogous structures show that similar selective pressures can produce similar adaptations beneficial features Similarities and differences among biological molecules in the DNA sequence of genes can be used to determine species relatedness
what is the transfer of pollen from the anther to the stigma of a flower.
Answer:
Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds.
:)
Answer:
Pollination
Explanation:
The transfer of pollen from the anther (male part) to stigma (female part) of a flower is called pollination.
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HELP PLEASE FAST ILL MARK BRAINLIST
Answer:
c - half as much
Explanation:
i took this last year
Answer:one-half as much
Explanation:
I will mark u brainliest correct answer only !
Answer:
C
Explanation:
hello, I need some help with this
Answer:
I can't read the name of the graphs, but it is the one that is the graph that is in the bottom left corner (grassland is what I think it says.)
Explanation:
We are talking about equilibrium, so the graph is going to depict equality. As you can see, this graph is the most consistant when compared to the other graphs.
A diploid cell contains 40 different types of chromosomes.
How many total chromosomes are in the diploid cell?
How many total chromosomes are in the haploid cell?
How many pairs of homologous chromosomes are in the diploid cell?
How many pairs of homologous chromosomes are in the haploid cell?
ILL GIVE U BRAINLYIST
Answer:
D I think I'm not too sure
where does the energy for active transport come from
Answer:
Active transport is a process that is required to move molecules against a concentration gradient. The process requires energy. Energy for the process is acquired from the breakdown of glucose using oxygen in aerobic respiration. ATP is produced during respiration and releases the energy for active transport.
I hope it's helpful!
Why is it important the blood is constantly moving?
Answer:
Moving things in and out of the cell is an important role of the plasma membrane. It controls everything that enters and leaves the cell. There are two basic ways that substances can cross the plasma membrane: passive transport, which requires no energy; and active transport, which requires energy.
Explanation:
Hypotonic Solution:
The concentration of solute outside of the cell____________are
What happens to a cell in a hypotonic solution?
than the inside of the cell.
Answer:
hypertonic
Explanation:
Hope this helps
From,
1kvibing
Answer: is less concentrated than inside the cell so water moves out of the cell to try to correct so the cell shrivels
Explanation:
what was the name given to an offspring that is the exact copy of its parent
Answer:
a clone kind of or an identical daughter
Explanation:
i can't remember but sexist to be called a daughter tho init
biological fitness definition
NEED HELP with this science
Answer:
I am not sure what you are asking but when pH is alkaline it will change the litmus paper to that blue color.
(PLS HELP DUE IN 5 MINS!) The pteropoda, or “sea butterfly”, is a tiny sea creature about the size of a small pea. Pteropoda are eaten by organisms ranging in size from tiny krill to whales. They are a major food source for the North Pacific juvenile. Their shells are made up of calcium carbonate. The photo provided is the shell of a pteropoda. The shell can dissolve within a 45 day period. What can one infer about what is causing the shell of the pteropoda to disappear while in a marine environment?
a) Carbon monoxide (CO) is being released by natural systems. Oceans are absorbing this excess of CO and the pH within the oceans is increasing.
b) Methane (CH4 is being released too quickly from burning of fossil fuels. Oceans are lowering their pH and ocean acidification occurs.
c) Natural sources are releasing an excess of CO2 to the oceans. The marine photosynthetic organisms are emitting too much oxygen. This is return is causing ocean acidification.
d) The excess of CO2 emitted from anthropogenic sources is being absorbed by the oceans from the atmosphere. This results in more hydrogen ions in the ocean, which increases acidification.
Answer:
The excess of CO2 emitted from anthropogenic sources is being absorbed by the oceans from the atmosphere. This results in more hydrogen ions in the ocean, which increases acidification.
Answer: d) The excess of CO2 emitted from anthropogenic sources is being absorbed by the oceans from the atmosphere. This results in more hydrogen ions in the ocean, which increases acidification.
Who are the key players in dna replication
The key players in DNA replication are enzymes. These enzymes are helicase, primase, DNA polymerase, and ligase.
What is the role of enzymes in DNA replication?At the replication fork, the enzymes responsible for DNA replication work in concert to simultaneously synthesize the DNA's leading and lagging strands. The replication DNA polymerases (Polymerase III in E. coli) produce dimers to complete this activity.
The enzyme DNA polymerase, also referred to as DNA pol, is one of the main players. DNA pol I, DNA pol II, and DNA pol III are the three primary forms of DNA polymerases found in bacteria.
DNA pol III is currently understood to be the enzyme needed for DNA synthesis, whereas DNA pol I and DNA pol II are mostly needed for repair.
Therefore, the key players in DNA replication are enzymes. These enzymes are helicase, primase, DNA polymerase, and ligase.
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Radiation continues to be detected in the area surrounding the abandoned
nuclear power plant at Chernobyl, which experienced a nuclear accident in
1986. How does this fact illustrate a concern that people have with nuclear
energy as a source of electricity?
O A. It shows that any type of radioactive material will have harmful
effects on organisms in the environment.
O B. It shows that chain reactions are still happening in the reactors at
the nuclear power plant.
O C. It shows that radioactive materials released at nuclear power
plants remain radioactive and persist in the environment.
O D. It shows that nuclear power plants always leak a small amount of
radiation into the environment.
Answer:
C)
Explanation:
I hope this helps :)
Answer:
its D.
Explanation:
just took quiz
When a cell has energy available, how can it store small amounts of that energy?
Answer:
When a cell has energy available, it can store small amounts of it by adding phosphate groups to ADP, producing ATP. ADP is like a rechargeable battery that powers the machinery of the cell. One way cells use the energy provided by ATP is to carry out active transport.
Explanation:
brainliest please
A sunflower is placed facing away from a window. The following day, the sunflower is facing the window. This is due to
Answer:
because plants faces and gets sunlight to grow
Explanation:
horizon.
At night, in its absence, the sunflowers face east again, anticipating the sun’s return.
They do this until they get old, when they stop moving. Then, always facing east, the old flowers await visits from insects that will spread their pollen and make new sunflowers. Those flowers too, will follow the sun.
What is a gene? What is a gene? What is a gene?
Answer:
Your answer should be D. A section of DNA that codes for a specific trait.
Answer: D
Explanation: Just took the test and got it correct.
modify means to:
prohibit
pasture
fathom
alter
What process is taking place in the image below?
You can see in this particular structure, there is a hydrogen bond between a hydrogen on the hydronium ion and the oxygen on the other water molecule.
Hydronium ions don’t exist in on their own, they’re required to have some way of balancing the charge that comes from the additional hydrogen ion. This balancing is typically done by the water surrounding the hydronium ion (H3O+H3O+) since water will outnumber the amount of hydronium atoms by orders of magnitude (there’s a lot more water than ions).
The hydronium ion in cold water is typically surrounded by 6 water molecules (probably oxygen towards the extra hydrogen but I can’t access the journal to confirm). There are some other structures like the one above, and another called the Eigen cation where the hydrogen is at the center of four water molecules (one is technically the hydronium). There’s also a very large structure that’s called the magic structure that has a hydronium ion surrounded by twenty water molecules (it’s called magic because it’s extra stable for its size).
Sahara Desert
Which statements describe the Sahara Desert ecosystem? Select all that apply.
It has dry, thin soil.
It has a small amount of rain.
It has many different types of organisms.
Answer:
I would say all three describes the Sahara. Dry, thin soil sounds like sand, which is the soil in the Sahara Desert. This ecosystem definitely has a small amount of rain; that's what defines a desert. Along with that, the Sahara is also very diverse, inhabited by many organisms, from bugs, snakes, and other reptiles to rabbits, jackals, foxes, and even camels. Hope this helps!
The statements that best describe the Sahara Desert ecosystem are as follows:
It has dry, thin soil.It has a small amount of rain.Thus, the correct options for this question are A and B.
What is meany by an ecosystem?An ecosystem may be defined as the place or an area where individuals of different organisms live and interacts with each other for the purpose of food, space, resources, mating partner, etc.
In technical terms, the Sahara is not an ecosystem, it is a desert biome that contains multiple ecosystems. Organisms like Lizards, chameleons, skinks, and cobras are found among the rocks and dunes.
The lakes and pools of the Sahara also contain algae and brine shrimp and other crustaceans. The various snails that inhabit the desert are an important source of food for birds and animals.
Therefore, the correct options for this question are A and B.
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it is not good for farmers to kill snakes. give reason
Answer:
it is both good and bad because if snakes were there the rats will not destroy the fields and if their will much snakes then they will kill humans so it is both bad and good
I hope u may understand the answer
Answer:
it is not good for farmers to kill snakes because
without snakes , the numbers of these specious could become out of control
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Question: Ignoring the human actions of auto and factory mission what generalization can you make about the balance of carbon dioxide and water to a real long period of time?
(Zoom into the photo of necessary)
Answer:
yes we can
Explanation:
Plants and Animals maintain a balance of CO2. Plants take in CO2 by photosynthesis and animals release CO2 by respiration.
Can hydrogen peroxide be broken down by catalysts other than those found in a living system? What is/are the control(s) and why are they needed?
Answer:
Can hydrogen peroxide be broken down by catalyst other than those found in a living system? Hydrogen peroxide can be broken down by manganese dioxide because it has catalytic properties. It is unstable which makes it very reactive. ... Sand however is not able to break it down
Explanation:
because it contains no catalytic properties
Manganese dioxide, which has catalytic properties, can degrade hydrogen peroxide. Because it is unstable, it is extremely reactive. It even degrades when exposed to light.
What is a catalyst?A catalyst is a substance that accelerates or reduces the temperature or pressure required to initiate a chemical reaction without being consumed in the process. Catalysis is the process of facilitating a reaction by adding a catalyst.
Hydrogen peroxide is one of the cleanest and most versatile chemicals available, decomposing to produce only oxygen and water (disproportionation).
The catalytic decomposition of hydrogen peroxide allows for the use of various catalysts to speed up the decomposition process.
Another consideration is that catalase is an enzyme that degrades at higher temperatures. The activation energy of the reaction changes as the catalyst decomposes.
As a result, the reaction will slow down. Manganese dioxide, on the other hand, does not decompose even at higher temperatures.
Thus, it can be concluded that hydrogen peroxide be broken down by catalysts other than those found in a living system.
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These organisms can be microscopic, or they can be quite large, as in giant kelp.
A. Viruses
B. Virons
C. Proteins
D. Protists
Answer:
Protists
Explanation:
Kelp is not a plant. It is a brown alga and is part of the large kingdom of life known as the Protista.
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how are Metamorphic rocks with fine grains made and how did the composition of the Earth’s atmosphere cause changes to form the rock over time.
Answer:
A rock is a naturally formed, non-living Earth material. Rocks are made of minerals. ... A rock may be made of only one type of mineral. More often rocks are made of a mixture of different minerals.
Metamorphic rocks (changed rocks) are made when existing rocks are subjected to high temperatures and high pressures for long periods of time. Metamorphism (meta = change, morph = form) happens when molten rock intrudes other rocks and bakes the contact zone where the molten rock touches the preexisting rock. Metamorphism also happens when rocks are buried deeply during the process of mountain building. The kind of metamorphic rock made depends on the kind of original rock; for example, sandstone is turned to quartzite, shale is turned to slate, and limestone is turned to marble.
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
Cellular membranes enclose a cell and its contents from its environment. Establish which of the
following comprises cellular membranes.
A. Lipids
B. RNA
C. DNA
D. Microsphere
Answer:
The function of segregating the interior of the cell enclosure to the outside is known to occur by the function of the plasma membrane. These molecules comprising the plasma membrane is none other than lipids. Highly enriched hydrophobic tails of lipids interact with other lipids in a typical bilayer arrangement to regulate and control gene expressive Molecular and other crucial ions from moving in.
Which of these is not true about water?
a. it's polar.
b. it can dissolve anything.
c. it is known as the universal solvent.
d. its molecules are attracted to each other.
Answer: B
Explanation: Water is capable of dissolving a variety of different substances, but not every substance. It can only dissolve somethings, not anything.
How is the attraction between 2 people influenced by biology?
Answer:
The biological part of our attraction lies in something called the major histocompatibility complex (MHC) or human leukocyte antigen (HLA) and the going theory is that opposites attract. Put another way, the more different our HLA types are from one another, the more likely we are to find each other attractive.
Explanation:
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