A blood pressure reading of 158/102 indicates... A. systolic pressure
B. diastolic pressure
C. hypotension
D. hypertension

equal distribution i think.

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.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.