1. Why is it difficult to prove that competition causes variations in a population?
- Many other factors also influence population size
- Correlation on a graph is not shown
- Competition happens very quickly
- The data collected is very specific so it is difficult to establish a link
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Other questions in this quiz
2. Name an abiotic environmental factor
- Intraspecific competition
- Availability of prey
- Interspecific competition
3. What does average life expectancy mean?
- An estimate based on factors including wealth, health of the individual and lifestyle factors
- Average number of years of life for anyone, changed every 100 years
- The average age at which 50% of the individuals in a particular population are still alive
- The average age that a person will die, taken from the national census
4. What are all the interacting biotic and abiotic features in a specific area known as?
5. How would you estimate a population size from mark-release-recapture?
- [no. marked individuals recaptured * no. in second sample]/no. individuals in first sample
- [no. individuals in first sample * no. in second sample]/no. marked individuals recaptured
- [no. marked individuals * no. marked individuals recaptured]/no. individuals in first sample
- [no. marked individuals recaptured * no. in first sample] *100