instruction:
Given a scientific question, generate a correct answer to it.
question:
Water is an oxide of what element?
answer:
hydrogen

question:
Learning to get used to something after being exposed to it for a while is associated with what kind of learning?
answer:
habituation

question:
Because dizygotic twins develop from two eggs fertilized by two sperm, they are no more identical than siblings born at what?
answer:
different times