Answer:
The system that moves blood throughout the body.
Only the bases varies from one nucleotide to another.
Many living organisms respond to things in the environment called Stimuli.
Answer:
Aerobic respiration saves a lot of energy compared to anaerobic respiration. Aerobic activities can generate up to 38 ATP per gram of glucose consumed. Anaerobic reactions only produce 2 ATP per gram of glucose.
The answer is carbon dioxide.
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