Answer:
A. Blood is pushed through vessels
Explanation:
Heart muscles contract and relax. The most important effect of this action on the human body is Blood is pushed through vessels.
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Explanation:
The structure labeled as x is the
<h3><u>nucleus</u>. </h3>
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The parents both need to be heterozygous, meaning they have to have one dominant and one recessive allele.
It is the comparison of the nucleotide sequences in DNA
Decomposers break down dead animals and plants. They usually benefit producers by releasing nutrients back in the soil.