Alex is studying leg bone fossils of an extinct species to see if the extinct organism could be an ancestor of a certain living species. Which of the following types of evidence could
he obtain from studying fossils?
A. genetic evidence
B. embryological evidence
C. structural evidence
D. developmental evidence

the correct answer is b

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.