How does the energy produced in the sun's core reach the sun's outer surface? O A It moves slowly through the radiation zone as electromagnetic radiation, and then through the convection zone as a loop of hot gasses
that rise before they cool and sink,
OB. It moves through the convection zone as a loop of hot gasses that rise before they cool and sink, and then as electromagnetic radiation
moving slowly through the radiation zone.
OC. It moves slowly through the core as electromagnetic radiation, and then through the convection zone as a loop of hot gasses that rise
before they cool and sink.
OD. It moves through the convection zone as a loop of hot gasses that rise before they cool and sink, and then as electromagnetic radiation
moving slowly through the core.

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.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.