How much has the greenhouse gas carbon dioxide increased in the air just in the last few years?

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?

How does the nervous system affect the excretory system?

What does it mean for an allele to be dominant?