Which statement best explains how a cell gets rid of carbon dioxide gas? O A. Transport proteins use energy to make the cell breathe out the
gas.
B. Chloroplasts use the gas to make molecules of simple sugars and
oxygen gas.
O C. Vacuoles filled with the gas merge with the cell membrane and
then open
O D. Molecules of the gas pass between the phospholipids of the cell
membrane.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

answer: dna

because all cells have genes

i think the answer would be a. after sentence 14! i hope i at least a little