What is Fertilizer?

• A. A chemical or natural substance added to soil or land to increase its fertility.
• B. The process of turning waste into reusable material.
• C. The material your plant grows in.
• D. The level below which the ground is saturated with water

Answer: (A)

Fertilizer is anything added to soil to supply nutrients that help plants grow. It can be chemical (inorganic) or natural (organic) and is used to increase soil fertility by providing essential elements like nitrogen, phosphorus, and potassium, plus trace nutrients. This makes plants healthier and can boost yields.

The other descriptions describe different concepts: turning waste into reusable material is recycling, not fertilizer; the material your plant grows in is the growing medium or soil itself; and the level below which the ground is saturated with water is the water table.