Contents
Key Stage 4
Meaning
Biotic environmental factors are the conditions of a habitat caused by other organisms.
About Biotic Environmental Factors
Biotic environmental factors include:
- Diseases
- Large populations;
- Consuming too much food.
- Using too much of the fresh water
- Blocking out light
- Parasites
Examples
- Disease is a biotic factor which can lower the population of a specific organism within a community. This will have an effect on other organisms in the community due to the feeding relationships between them. If a disease reduces a population then the population of the organism that eats it will decrease while the population of organisms that are eaten by it will increase.
References
AQA
- Biotic factor, pages 323, 326, GCSE Biology; Student Book, Collins, AQA
- Biotic factors, page 107, GCSE Biology; The Revision Guide, CGP, AQA
- Biotic factors, page 241-2, GCSE Biology, Hodder, AQA
- Biotic factors, page 84, GCSE Combined Science; The Revision Guide, CGP, AQA
- Biotic factors, pages 255, 258, 259, GCSE Combined Science Trilogy; Biology, CGP, AQA
- Biotic factors, pages 258-259, 261, 278, 282-283, GCSE Biology; Third Edition, Oxford University Press, AQA
- Biotic factors, pages 315, 318, 319, GCSE Biology, CGP, AQA
- Biotic factors, pages 79-80, GCSE Combined Science Trilogy 2, Hodder, AQA