Which of the following is not an example of an ecological service provided by forests?
a) livestock grazing areas
b) reduction of soil erosion
c) purification of water and air
d) reduce atmospheric carbon

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.

Climate like that in the sahara desert have the fastest rates of weathering

What two factors does carrying capacity compare? population size and resource use population growth and resource availability resource use and time population size and time