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.
C. Glaciers cause erosion through the movement of large chunks of ice, which are deposited and form depressions
Explanation:
plz give me brainiest
Answer:
Shows the common ancestor of all living organisms
Explanation:
They're just the lineup of organisms looking for a common ancestor and common traits or where the traits came from.
6-C (breaks off)
7-C(they secrete acid that breaks away rocks)