The correct answer would be D), over millions of years, Pangaea broke apart and drifted to form the seven continents.
Respiration is a process of exchanging gas.
One will be due to climatic change or it might be coz of evolution
Metabolism involves the over-all chemical reactions of the body. It is divided into two kinds. The first one is catabolism which is the breaking down of molecules to acquire energy. Anabolism, the other type, is the synthesis of all the molecules that are needed by the cells.
