What gas is taken in to start the calvin cycle?

C, h, o - elements that are common to biomolecules. if the biomolecule in question is a protein these elements also combine with nitrogen. which molecule below is a protein?

What is one disadvantage of desalination? a - the process kills fish. b - the process uses fuel that is expensive. c - the process makes water that is unsafe to drink. d - the process is too difficult to carry out in big cities. quick taking a !

What are the characteristics of living things