instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Lying with their mouths open, a behavior called gaping, probably serves the function of cooling down for crocodiles.
answer:
Lying with their mouths open, a behavior called gaping, probably serves what function for crocodiles?


question:
Like mitochondria, plastids contain their own dna.
answer:
Like mitochondria, plastids contain their own what?


question:
A frog develops (a/an) lungs as it changes from a tadpole to an adult frog.
answer:
Which of the following structures does a frog develop as it changes from a tadpole to an adult frog?