The correct answer is: [B]: "beneficial" .
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{<u>Note:</u> A symbiotic relationship known as "mutualism" — in which both organisms benefit.}.
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Answer:
unfortunately, if the snail is deep inside its shell it is most likely ill.
Carbon accumulates oxygen
Answer:
The respiratory centers that control your rate of breathing are in the brainstem or medulla. The nerve cells that live within these centers automatically send signals to the diaphragm and intercostal muscles to contract and relax at regular intervals.
