What are cells that make up the lungs? (do not include dust cells)

How does the study of genetic disorders such as pku biologists understand normal alleles?

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

I’m stuck on this question cuz i’m stupid sksksksk