instruction:
Given a statement, generate a question such that the answer is contained in that statement.
question:
h2o is essential for all plants on Earth
answer:
What is essential for all plants on Earth?


question:
Cryptic coloration is used for protection by fish against predators
answer:
What is used for protection by fish against predators?


question:
Something that builds nests in branches moves their wings using muscles in the chest
answer:

What does something that builds nests in branches move their wings using?