个 2.3.4 Quiz: Weather and Climate Question 2 of 10 Which of the following is true of high clouds? O A. They cause most precipitation. B. They are composed of ice crystals. C. They generally produce lightning. D. They are a sign of severe weather.

answer: c

explanation:

helicase, i think thats it

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )

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.