Use biological community in a sentence

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?

During convection, less dense fluid rises and denser fluid sinks.

28. how many linkage groups will be formed by homogametic organism with 28 chromosomes?