A scientist is examining the role of an element found in fats and carbohydrates of living things. This element makes up 65% of human body mass. Which statement describes the element he is studyin

the answer would be d

check for the pregnancy rating of drug. if its class c or d see if other alternatives

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate