Which of the following correctly describes a compound? (4 points) Group of answer choices The atoms are not chemically bonded, and there is no set ratio for how the atoms can combine together. The atoms can only combine in fixed ratios, and they can only be separated by a chemical change. The atoms do not retain their individual chemical properties, and they can be separated by physical means. The atoms are chemically bonded together, and they retain their individual physical and chemical properties.

answer; i believe the correct answer is (c) /// is a homogeneous mixture of gaseous substance nitrogen,oxygen and smaller amounts of other substancesmixtures can be either ( homogeneous or heterogeneous)plz check first good luck

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.