Well you should study how different chemicals work, and make flashcards to carry around or make notes during class to study for later
Answer:
They both have 7 electrons in their outer shell
Answer:
Oil
Explanation:
everything else is above the earth
305 x 4 = 1220.
1/4 of 304 = 76.
1220 + 76 = 1296.
You'd need approximately 4 and 1/4 of glasses of milk to get the recommended calcium intake for teenagers.
Answer: the system of blood, blood vessels and the heart that carries blood throughout the body
Explanation: i hope this helps