Original Project
Interdependence in Ecosystems
Given adequate resources and an absence of disease or predators, populations of organisms in ecosystems can incr…
Item IE079002: Populations decrease when the number of births is less than the number of deaths.
When would the size of a population of animals decrease?
- When the number of births is less than the number of deaths
- When the number of births is greater than the number of deaths
- When the number of births is the same as the number of deaths
- Populations of animals are always decreasing.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
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|---|---|---|---|---|---|---|---|---|
| n = 1372 |
6–8 n = 761 |
9–12 n = 608 |
Male n = 684 |
Female n = 663 |
English n = 1277 |
Other n = 69 |
||
| A. | When the number of births is less than the number of deaths | 74% | 71% | 79% | 74% | 75% | 75% | 62% |
| B. | When the number of births is greater than the number of deaths | 11% | 13% | 9% | 13% | 10% | 11% | 19% |
| C. | When the number of births is the same as the number of deaths | 6% | 6% | 6% | 6% | 7% | 6% | 6% |
| D. | Populations of animals are always decreasing. | 8% | 10% | 6% | 8% | 9% | 8% | 13% |