What body system receives information from the inside and outside the body and responds to that information?

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?

Which is one example of a phenotypic change that is not genetic

Can a trait be both polygenic and have multiple alleles? explain why or why not.