3. what event within the food chain might lead to the graph shown below? a. a disease in the population of rabbits. b. a disease in the population of snakes. c. a disease in the population of hawks. d. it is impossible to tell which of the above occurred.

A. A disease in the population of rabbits. The rabbits dying off would mean that the grass population would increase because there are less rabbits to eat it. The snake and hawk population drop because they are both predators of rabbits, meaning that they eat rabbits. Since the rabbits are dying off, the snakes and hawks have less food source so the limit on how many snakes and hawks that can be sustained by eating the rabbits decreases.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

and after water is usually warmed by the sun the water temperature raises and then evaporates .