Given a scientific question, generate a correct answer to it.

[EX Q]: What is formed when water vapor in the air condenses into tiny droplets?
[EX A]: fog

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

[EX Q]: Mollusks are probably most closely related to organisms in the phylum annelida , also known as what?
[EX A]:
segmented worms