A chemical reaction in which oxygen is combined with another substance

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 example would the nurse consider to be a part of systems thinking theory?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above