9. A student draws the model shown below. Sun
X
Earth
Which of these best compares the conditions at Location X and Location Y?

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.