Answer: A) Tropical regions have more available niches into which new species can occupy.
Explanation: USATestPrep
We require to keep our water supply clean because we imbibe that water. If our water supply wasn't unsullied, we would die of dehydration. Another reason is that without water, all the crops would die and we wouldn't have any aliment to victual and so we would withal die of hunger.
Answer:
well it would have to be out of your 23 pairs, but which ever it is will have an entire section of the chromosome missing, hence the name deletion.
Explanation:
