He thought that they were moons
but it was actually the rings of the planet
Answer:the answer is c
Explanation:
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The answer is the nucleus
Answer:
Our body cells require oxygen to release energy.
Explanation:
The oxygen that we take in during respiration is used to break down the food we eat to release energy from it. When we breathe in oxygen, it diffuses into blood from the lung, where it is transported by red blood cells to the entire body to be used to produce energy.
Important muscle electrical signals is the movement of charged material (ions) across cellular membranes in a limited area
