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

[EX Q]: Trash that gets into fresh and saltwater waterways is called what type of debris?
[EX A]: aquatic

[EX Q]: For most of a star's life, hydrogen atoms fuse to form what?
[EX A]: helium atoms

[EX Q]: What measures the amount of water in the air?
[EX A]:
humidity