Answer:
B
Explanation:
DNA helps code for our proteins. The way DNA is passed is from parent to offspring. DNA Nitrogenous bases for each person is going to be different.
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I think the answers are A, B, and C.
The circulatory system is used to transfer blood
Answer:
returns to the left heart, completing the pulmonary cycle
Explanation:
H2o is the most common molecule in the human body. Remember the fact that 70% of the human body is made of water? H2o is the molecule for water, meaning that H2o is the most common molecule.
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