In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Q: Question: A scientist sees that some galaxies are closer together than before, so they know that the universe's expansion is
Answer: less

A: As the Universe expands, galaxies move further and further apart.
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Q: Question: Reed saw a cell through a microscope. He sees a cell has less visible mitochondria than the rest. This cell likely is _____ active compared to the others.
Answer: less

A: Cells that are very active would typically have more mitochondria than cells that are less active.
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Q: Question: Will increases the population of his model of the world's population. The amount of water scarcity, if no other variables are changed, will likely go
Answer: up

A:
Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
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