Cow manure is rich in __________ A. Hydrogen B. Phosphorus C.

cow-manure-is-rich-in-a-hydrogen-b-phosphorus-c

Cow manure is rich in __________

A. Hydrogen

B. Phosphorus

C. Nitrogen

D. Potassium

The question was posed to me in final exam.

My question comes from Anaerobic Fermentation topic in portion Biomass Energy of Energy Engineering

Right option is C. Nitrogen

The explanation: Cow dung is the undigested residue of plant matter which has passed through the animal’s gut. The resultant fecal matter is rich in minerals. Color ranges from greenish to blackish, often darkening soon after exposure to air. And it is very rich in nitrogen.