It could be useful to scientist and other professions, because they could study what makes up different DNA and why it is the same in twins.
Answer:
The science of naming and grouping organisms is called systematics.
Explanation:
We actually never get new water, it is "recycled" through the Water Cycle
((evaporation, condensation, precipitation, and collection))
Answer: The voluntary nervous system
Explanation: it allows us the move our arms, legs, and other parts of the body.
