Across
- 1. The feeding relationship between the predator and the prey determines the size of the two populations by means of a negative...mechanism
- 5. When one organism changes because of the other in a given environment (e.g. lion and zebra)
- 7. The term for a population that exceeds its carrying capacity
- 9. Factors that help to regulate the growth of a population
- 10. By preying on fish populations, sharks prevent them from increasing too rapidly and becoming too...
- 11. A species with no living members
- 12. Individuals leave a population and do not return
Down
- 2. One of the precautions that must be taken to ensure reliability of the mark-recapture method is to ensure no immigration or emigration - i.e. the population must be...
- 3. The index used to calculate total population size in the mark-recapture method
- 4. The population density that an environment can support (8,8)
- 5. A group of different species that inhabit and interact in a particular area
- 6. Counting every single individual in a population
- 8. When predators remove the sick and weak individuals from the prey population, it keeps the prey population genetically...