Gross production is the amount of energy left after cellular respiration.
true or false

Definitely the statement is false. There are two terms here, gross productivity (GP) and net productivity (NP). The overall energy produced or captured is called gross production. Net productivity is obtained by subtracting the energy for respiration from gross productivity.

NP = GP - R

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.