Answer:
A. It is a source of genetic variation
Answer:
{Dear:friends name}
I'm writing this letter to tell you congrats on getting admitted into your dreams school!!
I know how nervous you were when the letter came.
i'm going to miss seing you around but i know that you are going to have so much fun when school starts up again .
Answer:
Muscles can also receive messages from the brain when the body temperature decreases. They respond by shivering. Shivering causes the muscles to contract and relax quickly. This process generates heat.
paleontology is the study of fossils whilst archaeology is the study of human remains and artefacts