Help please! The question is in the image below

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

What must be true for natural selection to heppen

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases