Cellular respiration<span> is </span>the process<span> of oxidizing food molecules, like glucose, to carbon dioxide and water. The energy released is trapped in the form of ATP for use by all the energy-consuming activities of the </span>cell<span>. </span>The process occur<span>s in two phases: glycolysis, the breakdown of glucose to pyruvic acid. </span>
Cell-tissue-organ-organ system-organism
Answer:
scientific theories must be tested by more than one individual multiply times for it to become scientific law