A mutation is a change in trait. For example people who are lactose intolerant are normal, but people that can can drink milk without a problem have mutated. Hopefully this makes sense and helped.
I believe i<span>mproving air circulation.
Hope this helps!</span>
<span>Cells are abnormal and moderately differentiated. I believe that's the correct answer.</span>
True is the answer to your question
Humans and Apes evolved separately from monkeys. Hope this helps.
