Explain what is meant by the terms habitat, community, environment and population

the dark variety, as they are not visible on the dark tree barks

explanation:

i think that it is plants

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.