Select an example of an open system.
a.) earth
b.) the atmosphere
c.) the water cycle

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.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

3test questions with answers on incomplete dominance