Each breeding season, a population of small lizards produces young. Scientists estimate the maximum number of young that the food, space and shelter in the habitat can support until adulthood.
| Breeding season | Number of young produced | Maximum number of young the habitat can support |
|---|---|---|
| A | 150 | 120 |
| B | 180 | 72 |
Calculate the percentage of young produced in breeding season B that the habitat cannot support. Show your working.
Explain why the young lizards are likely to experience greater competition in breeding season B than in breeding season A.
85 exam-style questions on Edexcel GCSE Biology 4.1 Evolution and natural selection, covering 4.1.1 Work of Darwin and Wallace and 4.1.2 Resistant organisms and evolution. Each one has a worked solution and a mark scheme showing where the marks go.