Medical professionals wear lead aprons to protect themselves from x-rays because prolonged or repeated exposure can cause mutations in dna which can lead to

answer; atp and nadph;

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time

i'm thinking 600 feet deep in one of the finger lakes.