Blood is a unique type of connective tissue that we haven't been able to synthetically create yet. For that reason donating blood is so essential to maintain the health of our population. If you are type O- blood, explain (in your words) the benefits and risks of being O-. Also, explain the differences between O+ and O- blood types.

you are very smart i bleave in you

Explanation:

answer; i believe its (ovulation);

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.