Nitrogen fertilizer is often synthesized using the Haber process, which produces ammonia.

These waste substances can produce ammonia, which is toxic if it builds up in your blood.

The cost of natural gas makes up about 90% of the cost of producing ammonia.

The Haber process is still important today because it produces ammonia, which is needed for fertilizer.

Excretia and other decomposing organic matter produce ammonia which is highly toxic to fish.

This is an exothermic reaction (hence the minus sign) when producing ammonia.

Other bacteria produce various acids, both organic and mineral, or ammonia.

The hydrogen is then combined with nitrogen to produce ammonia via the Haber-Bosch process.

The plant, completed in 1985, produces ammonia, methanol and urea for export.

Fritz Haber patented a process to produce synthetic ammonia.