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

[EX Q]: What is another environmental benefit of conserving resources?
[EX A]: less trash

[EX Q]: A fully developed placenta is made up of a large mass of what?
[EX A]: blood vessels

[EX Q]: Coral reefs are a type of what large community and have the highest biodiversity on earth?
[EX A]:
biome