Which of the following is an inorganic fertilizer?

Manure

Urea

Ammonium nitrate

All of these

While manure is a fertilizer, it's considered organic because it's derived from decomposed organic matter (like animal waste or plant material).

Manure:

While manure is a fertilizer, it's considered organic because it's derived from decomposed organic matter (like animal waste or plant material).

Urea:

Urea is a synthetic, inorganic fertilizer.

It's a nitrogenous compound commonly used to provide nitrogen to plants.

Ammonium nitrate:

Ammonium nitrate is another inorganic fertilizer

It's a readily available source of nitrogen and is widely used in agriculture.