Which is the substance formed from decomposing matter?
question 9 options:

ammonia

carbon

nitrogen

phosphorus

Ammonia

Explanation:

Animals feed on plants and assimilate the plant proteins into animal proteins. When plants and animals die, they are acted upon by saprophytic bacteria and fungi forming ammonium compounds. Organic compounds break down by the action of living organisms anaerobically. These organisms use nitrogen, phosphorus, and other nutrients to live and to develop cell protoplasm, but they reduce the organic nitrogen to organic acids and ammonia.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.