Answer:
When people lift weights, microscopic damage (microtears) occurs to the myofibrils within the muscle fiber. These microtears stimulate the body's repair response. ... The increased number of myofibrils causes muscle fibers to enlarge, increasing their volume and size.
Explanation:
The answer Is B A new Species is forming
Answer:
mutation, recombination, and immigration of genes.
I'm guessing the answer is a
