Question

Students grew vegetable plants in their schools garden. They learned that waste from the vegetables can be composted. The compost can then be used in a garden. The students made this model to show how matter moves through a composted and a garden.

which argument best explains why bacteria are needed to form compost?

《1》 Bacteria provide energy for plants.
《2》Bacteria break down waste and make it useful to plants.
《3》 Becteria contaminate vegetables and make humans sick.
《4》 Bacteria produce waster that prevents plants from growing.


|•Pls help me•|

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Answer 1

2

Bacteria break down (or decompose) dead organisms, animal waste, and plant litter to obtain nutrients. But microbes don't just eat nature's waste, they recycle it. The process of decomposition releases chemicals (such as carbon, nitrogen, and phosphorus) that can be used to build new plants and animals.