The population expands and competition intensifies. Competition strengthens while the population contracts. The population increases as competition decreases. Competition weakens and the population decreases.
What happens to a population and to competition when there is a reduction of living space?

Options:
- The population expands and competition intensifies.
- Competition strengthens while the population contracts.
- The population increases as competition decreases.
- Competition weakens and the population decreases.

Competition strengthens while the population contracts.