I'll try to explain, because I've had tubes before. In fact, I still have them.
For me, tubes were put in because of too many ear infections, and excessive water in my ear. The tube helped drain the water out. You can see A picture I have in a file. The tubes can be put I believe in the ear drum. They're put there to help drain water that has trouble getting out on its own.
Answer:
Individuals of a species are not identical, Traits are passed from generation to generation, more offspring are born that can survive,and only the surviovrs of the competition for resources will reproduce.
Explanation:
Answer:
mutualism and parasitism
Examples:
mutualism: crocodiles and birds
parasitism: mosquitoes and humans
<span>It was made in stars that lived before the solar system formed.
Hope this helps!
-Payshence xoxo</span>
The beginning of the Eocene Epoch Era.