Question

_________ is used as fertilizer options are (a) manure (b) sludge (c) sewage (d) none of these​

Answer 1

Answer:

Manure is used as fertilizer.

Answer 2

Answer:

Fertilizers are chemical substances supplied to the crops to increase their productivity. These are used by the farmers daily to increase the crop yield. The fertilizers contain the essential nutrients required by the plants, including nitrogen, potassium, and phosphorus.