Read the rules Start quiz over

Fencing a field causes the population of small rodents like voles to increase rapidly and then suddenly crash to almost nothing. What does Charles Krebs think is the cause of the crash?

Starvation

Predators

Disease

Social behaviour

Your Score

Score: 0

Questions: 0/0

Percent: 0%

Top Players

Top Scores

1. jeffownz4EVA: 400000
2. jeffownz: 315900
3. jeffownzALL: 250300
4. jeffownz9: 249800
5. jeffownz8: 249500
6. jeffownz7: 249200
7. jeffownz6: 248700
8. jeffownz5: 248200
9. jeffownz4: 247700
10. jeffownz3: 247200

Latest Scores

1. 1habibaami@hdsb.ca: 300
2. mmm: 3900
3. kam: 32700
4. derp: 11600
5. poop: 11100
6. derpdude: 11100
7. HI: 14400
8. hG: 13000
9. gh: 11300
10. ty: 11300

Name: