Which statement described a difference between the nitrogen and carbon cycles?

Similarities: Both of these are biogeochemical cycles,meaning that the chemicals spend a portion of the cycle in living things (hence the bio) and a portion in the nonliving environment (geo). They are also similar in that they both recycle nutrients that are essential to all organisms.

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.