What are the roles of a decomposer? Check all that apply.

Decomposers kill harmful microorganisms.
Decomposers break down waste and dead organisms.
Decomposers provide oxygen to the atmosphere.
Decomposers convert sunlight into food energy.
Decomposers recycle nutrients in the environment.

Decomposers break down waste and dead organisms.

Decomposers recycle nutrients in the environment.

Explanation:

Decomposers help keep the environment clean by acting on waste

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the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.