refers to the living parts of an ecosystem.

a covalent bond, specfically triple bond

b) the inside picture would look at a very high temperature in a very low ph

radon is correct hope this

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.