Because each body system has a completely different function.
It affects social health by making somebody’s mood bad and annoyed think of it as a negative affect
Answer:
can you add the answer choices so i can answer it for you? please
Explanation:
<span>Why are phytoplankton are essential ??
As they form the basis of the marine food chain. <span>Phytoplankton is the main food source for everything from microscopic organisms to whales.</span></span>