Answer:
everything except the oxygen as they excrete oxygen
Answer:
Hooke
Explanation:
While looking at cork, Hooke observed box-shaped structures, which he called “cells” as they reminded him of the cells, or rooms, in monasteries. This discovery led to the development of the classical cell theory.
Answer:
mitral valve
Explanation:
The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers).
Answer:
Mitochondria is the organell by the process of ETS and critic acid cycle.