In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[Q]: Question: If the dna from all 46 chromosomes in a human cell nucleus was laid out end to end, it would measure approximately how long? Answer: two meters
[A]: If the dna from all 46 chromosomes in a human cell nucleus was laid out end to end, it would measure approximately two meters long.

[Q]: Question: Living things on the ocean floor are known as? Answer: benthos
[A]: Living things on the ocean floor are known as benthos.

[Q]: Question: What has a bigger impact on water quality, natural events or human activity? Answer: human activity
[A]:
Human activity has a bigger impact on water quality, natural events or human activity.