Answer:
D. "always" cover the microscope when not in use.
Explanation:
when you are finished using a light microscope or any microscope in general you always need to put the cover back on it. Mostly, to protect it from any harmful bacteria, light etc. and to keep it clean and, from collecting dust.
I think it might be <em>natural disasters.</em>
The answer is (B. Medium) because it has to travel through the ear drum evenly without busting it. Hope this helped :)
It makes their blood sugar stay leveled
