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The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.
The male sperm determines whether it is a girl or a boy, if it has XX chromosomes it is a girl if it has XY chromosomes it is a boy. Males can only receive Y chromosomes from their fathers.
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The answer to this question is true; contractions during childbirth are an example of positive feedback since they are given to a neurotransmitter known as
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The 3rd answer that they allow the roots to absorb water & nutrients from the soil.
