When did humans begin polluting the earth?

Microorganisms aren’t all decomposers; in fact, many act as producers or primary consumers in an ecosystem. how do microorganisms that act as producers benefit the rest of an ecosystem in terms of energy transfer? what about microorganisms that act as primary consumers?

Select the word from the list that best fits the definition the temperature to which air must cool to be saturated

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f