coastal deposition seems to be correct answer.
sorry if i'm wrong.
The answer is cell membrane
Carbonate groups contain a single carbon atom, and three oxygen atoms in a trigonal molecular geometry. The carbon atom has two single bonds to two oxygen atoms and a double bond to the third oxygen atom. Therefore, in addition to carbon, carbonate minerals contain oxygen. An example of a carbonate mineral is calcium carbonate, often found within rocks.
Fungi has a cell wall but no chloroplasts.
