Need help with this for my zoology class. The sooner the better

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

Describe the layers of the suns atmosphere?

Analyze how the four requirements for life were identified by scientists