Should water h20 be included in the model as a reactant or a product

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?

Are the layers of rock above and below the coal older or younger?

This rapid change in species that rarely leaves behind fossil evidence is referred to as