A student models steps in the process of how some sedimentary rocks form. First, she pours pebbles, leaves, sand, and salt into a jar. Then, she adds water to the jar until all of the contents are covered. What should the student do to her model next?

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

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.