ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST What is the composition of an isotope of calcium (atomic number 20)?

19 protons, 20 neutrons, 19 electrons
21 protons, 20 neutrons, 20 electrons
20 protons, 25 neutrons, 20 electrons
22 protons, 20 neutrons, 19 electrons

answer; i do believe the correct answer is (river); /// 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.