Answer:
"Low levels of the hormone epinephrine, also called<em><u> adrenaline</u></em>, cause blood vessels to relax and widen. High levels of this same hormone, along with the hormone norepinephrine, cause the blood vessels to narrow and the heart rate to rise, <u><em>increasing blood pressure</em></u>."
Explanation:
Mass is described like this: Any thing that takes up space
Answer:
I think number 9 is D and number 10 is A
The answer is A. same atomic number; different number of protons
