Compare and contrast mitosis and meiosis. Last Year's Exam 2Questions 1. The second law of thermodynamics holds that a. matter can be neither created nor destroyed. The total energy in the universe is flowing from forms of higher to lower quality. Energy flows in one direction.
Energy tends to become increasingly more disorganized.
The primary source for energy on earth is the sun. The most common and important form of energy available for living organisms is heat. The products of a reaction can have less energy than the reactants. The products of a reaction can have more energy than the reactants. Reversible reactions tend to approach an equilibrium.