Metabolic pathways in which cells harvest energy from food molecule in the absence of oxygen is called aerobic cellular respiration photosynthesis anaerobic cellular respiration krebs cycle

What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.