Question:
Use evidence from the fact that if an organism dies then the population of that organism will decrease to answer the following question. "One day a zebra dies. Zero baby zebras were born in the herd on that day."

Answer:
the population went down

Question:
Use evidence from the fact that biofuel releases carbon dioxide into the atmosphere to answer the following question. "An environmentalist heats their home by using a corn stove. The environmentalist knows that heating this way releases carbon dioxide back into the air, but is unworried about is as a result of"

Answer:
it promoting plant growth

Question:
Use evidence from the fact that a tree growing a tree-growth ring occurs once per year to answer the following question. "The outer casing of a tree expands how many times a year"

Answer:
once