7. Challenge yourself: You have already learned that mutation is one source of variation in a population. Based on what you have just seen, what is a second
source of variation?
(I just need more information or explanation) please

Natural selection would be the other source because organisms that have a beneficial trait will live, but organisms that do not have a beneficial trait might die. So the organsims that do survive will reproduce and pass on those traits to their offspring. Eventually all the organisms that do not have a beneficial trait will die out, leaving most of the population having that beneficial trait.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

the answer is 95 degrees