As you grow older, you would need to remain physically active to keep a good level of physical fitness.
Answer: T
The answer is: [D]: "ammonia" .
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The main parts of a nucleotide are the nitrogenous base and sugar-phosphate backbone. A viable nucleotide can't form without them. Thus, they both have equal importance.
Lysosome, Mitochondria, Nucleus, Vacuole, Endoplasmic Reticulum