<span>Adaptive evolution is always changing because the environment is changing continuously.
Hence,
The right answer would be :
</span><span>Adaptive evolution is a fluctuating change in a trait.</span>
I Think The answer is a I hope it helps ya
Take a chisel and a hemmer to carefully carve around the fossil to not damage it. then they study it
All of the choices are correct.
Explanation:
Viruses are non cellular entities which are made up of either a DNA or RNA enclosed within a protein coat.
Viruses cannot reproduce by themselves. They can reproduce only within living cells and hence they are obligate intracellular parasites.
Viruses have a wide range of hosts including animals, plants, bacteria etc.
However, each viral species has a very limited host range.
The giraffe is the organism which has systolic pressure among the other options.
The giraffe has one of the highest blood pressures of any mammal. It reaches pressures of up to 280/180 mm Hg, which is twice that found in humans (120/80 mmHg).
In their heads, a giraffe’s blood pressure remains about equal to a human’s. And they maintain that lower pressure in their heads whether they are chomping leaves from the limbs of tall trees or sipping water at ground level.
A giraffe’s large neck veins contain a complex system of valves that stops the blood from flowing backwards and pooling when it dips its head, which can be a full 20 feet differential from upright in a full-grown giraffe.
To know more about Blood pressure, refer to this link:
brainly.com/question/421557
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