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

[EX Q]: What do you call an abnormal mass of cells that is dividing improperly?
[EX A]: tumor

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

[EX Q]: Tree sap enclosing an organism in amber or an organism preserved in tar or ice are actually examples of what?
[EX A]:
fossils