What are the four types of instruments that measure humidity?

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Number and variety of living organisms includes genetic, species, and ecological types

In which layer do organisms on earth love?