Answer:
Mutations happen in our cells all the time. It's actually how all humans grow and change. The vast majority of mutations are harmless. Thus, they aren't avoidable.
Cute cat what breed is she/he
Answer: excretion... could also be sensitivity
Explanation:
M ovement
R eproduction
S ensitivity
G rowth
R espiration
E xcretion (removal of waste such as by defacation or sweating)
N utrition
No it is not possible for organisms in two different classes to be in the same genus