Because when exercising your heart pumps more blood to your body and
it has more space to fill so it beats faster
The ultimate source is mutation.It is the only way that new alleles and genes are created.
Answer:
The results of your testing suggest there was a genetic change in your skin cells
Answer:
Total growth of plants
Explanation:
In an experiment the dependent variable is what you are testing. In this case you are testing if height is affected by the amount of sunlight. It is called dependent because the result would be dependent on the controlled or independent variable.
The independent variable on the other hand, is the variable that is controlled, or manipulated to see changes on what is being tested (dependent variable).
Answer:
D. reproduction
Explanation:
If the species doesn't reproduce they die out or become extinct.
