Are the earth's ocean floor and continents the same age geologically? why or why not?

a. no, the continents are much younger because new crust forms there.
b. no, the ocean floor is much younger because new crust forms there.
c. yes, both the ocean floor and continents are constantly forming new crust.
d. yes, both the ocean floor and continents were formed at the same time.

No, the continents are much younger because new crust forms there. No, the ocean floor is much younger because new crust forms there. Yes, both the ocean floor and continents are constantly forming new crust. Yes, both the ocean floor and continents were formed at the same time.

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

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.