The total amount of organic matter present in any trophic level is called

The total amount of organic matter present in any trophic level is called biomass.  The physical composition of biomass is inconsistent, but generally includes carbon, water and organic volatiles. This organic matter is used for energy. This energy production process is referred to as bioenergy.

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%