There is no answer ,you wrote the answers with the question
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The answer is serotonin.
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Answer: It's the cells, just without the chloralplast , but animals don't need that because only plant cells have chloralplast. So animals only get theses type of cells if they a herbivores,or omnivores because they eat plants and it helps them survive that way
Explanation:
Explanation:
Cardiac muscles straited involuntary helps to pump blood through the body.
skeletal straited voluntary helps in body movement.
smooth non straited involuntary helps food to go digestive tract.
Answer:
it is colour less their is no colour ...