How do you calculate the number of neutrons? A. The same as the atomic number

B. Equal to the number of protons

C. Equal to the number of elections

D. Take the mass number and subtract out the atomic number

D

Explanation:

D is correct take the mass number and subtract it

D. Take the mass number and subtract out the atomic number

Explanation:

We should take the mass number and subtract out the atomic number to calculate the number of neutrons.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

true is the final answer!