What are the roles of a decomposer? Check all that apply. 1) Decomposers kill harmful microorganisms.

2) Decomposers break down waste and dead organisms.

3) Decomposers provide oxygen to the atmosphere.

4) Decomposers convert sunlight into food energy.

5) Decomposers recycle nutrients in the environment.

2) Decomposers break down waste and dead organisms.

Explanation:

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the answer would be knowledge about cars!

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.