What do you notice about each population as time goes by?
Question 9
9.
Notice the populations decrease as you go from the bottom of the food chain to the top. Whydo you think this is so?
Question 10
10.
Form hypothesis: How do you think predator and prey populations affect one another?
Question 11
11.
Question 12
12.
Question 13
13.
Question 14
14.
Question 15
15.
Question 16
16.
Question 17
17.
How did doubling the rabbit population affect the grass, snakes, and hawks at first?
Question 18
18.
How did halving the rabbit population affect the grass, snakes, and hawks at first?
Question 19
19.
Question 20
20.
Question 21
21.
Question 22
22.
Question 23
23.
Question 24
24.
Question 25
25.
Question 26
26.
Question 27
27.
Question 28
28.
Question 29
29.
Question 30
30.
Question 31
31.
How did increasing the snakes affect the grass?
Question 32
32.
Explain why:
Question 33
33.
How did increasing the hawks affect the rabbits?
Question 34
34.
Explain why:
Question 35
35.
Draw conclusions: In general, what effect did removing prey have on predators?
Question 36
36.
What effect did removing predators have on prey?
Question 37
37.
Observe: Kill off most of the hawks using the – button, and then click Play. Observe the GRAPH for about 12 months, and then click Pause. What happens?
Question 38
38.
Experiment: Click Reset. Try making other changes to the ecosystem. Use the + or – buttons, or choose Diseased from the dropdown lists. Click Play and observe for at least 12 months. Record what happens below.
Question 39
39.
Summarize: Give at least one example of each of the following:
A major disturbance that the ecosystem was able to recover completely from.
Question 40
40.
A major disturbance that caused the ecosystem to stabilize at a new equilibrium.
Question 41
41.
A major disturbance that caused the ecosystem to completely collapse.
Which organism is a producer in this food chain?
Hawks
Snakes
Rabbits
Grass
Where does the producer get its energy?
The Ground
The Air
Other animals
The sun
Consumers must eat other organisms for energy. Which organisms are consumers in this food chain?
