Question

what are fertilizer?​

Answer 1

Answer:

a chemical or natural substance added to soil or land to increase its fertility.

"sewage sludge could be a valuable fertilizer for use in British forests"

Explanation:

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Answer 2

Fertilizer, natural or artificial substance containing the chemical elements that improve growth and productiveness of plants. Fertilizers enhance the natural fertility of the soil or replace the chemical elements taken from the soil by previous crops.