Atrait that is masked by a dominant trait is called

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

9. the history of life on earth is recorded in

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f