Write two appropriate goal-setting questions.

b - the respond is innate and varies over time.

good luck!

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?