AP Environmental Science

Answer: B - Composting is used to recycle food waste.

Key Takeaway: Composting the act of recycling food and yard waste by purposely letting it decompose. The actual decomposition is helped along by ants, worms, and fruit flies, and then ultimately performed by bacteria, yeasts, and fungi-members of the decomposer trophic level. This decomposed waste can then be turned into highly-nutritious soil for plants. Composting is of great help to farmers and gardeners who can use the compost instead of mulch or store-bought plant food.