1. Biotic & Abiotic Influences

2. Ecosystem: all the living organisms that share a region & their physical & chemical environment

3. Biotic & Abiotic Influences Ecosystem: all the living organisms that share a region & their physical & chemical environment e.g.pond forest oasis

4. Biotic & Abiotic Influences Biotic Factors: living things, their remains, and features, such as nests, associated with their activities

5. Biotic & Abiotic Influences Biotic Factors: living things, their remains, and features, such as nests, associated with their activities Population: a group of individuals of the same species Community: all of the different species that interact in an ecosystem

6. Biotic & Abiotic Influences Abiotic Factors: the non-living physical and chemical components of an ecosystem e.g.rocks oxygen water sunlight

7. Biotic & Abiotic Influences Limiting Factor: any factor that restricts the size of a population e.g.biotic: availability of food abiotic: access to water

8. Biotic & Abiotic Influences Tolerance Range: the abiotic conditions within which a species can survive

9. Biotic & Abiotic Influences Tolerance Range: the abiotic conditions within which a species can survive Key abiotic factors: -light availability -water availability -temperature

10. Biotic & Abiotic Influences Biotic Factors: interactions with other organisms influence a species' success e.g.Competition: two individuals vying for the same resource

11. Biotic & Abiotic Influences Biotic Factors: interactions with other organisms influence a species' success e.g.Competition: two individuals vying for the same resource Predation: one individual feeds on another

12. Biotic & Abiotic Influences Biotic Factors: interactions with other organisms influence a species' success e.g.Competition: two individuals vying for the same resource Predation: one individual feeds on another Mutualism: two individuals benefitting each other

13. Biotic & Abiotic Influences Biotic Factors: interactions with other organisms influence a species' success e.g.Competition: two individuals vying for the same resource Predation: one individual feeds on another Mutualism: two individuals benefitting each other Parasitism: one individual lives on or in and feeds on a host organism

14. Biotic & Abiotic Influences Biotic Factors: interactions with other organisms influence a species' success e.g.Competition: two individuals vying for the same resource Predation: one individual feeds on another Mutualism: two individuals benefitting each other Parasitism: one individual lives on or in and feeds on a host organism Commensalism: one individual benefits & the other neither benefits nor is harmed

15. Biotic & Abiotic Influences Carrying Capacity: the maximum population size of a particular species that a given ecosystem can sustain -carrying capacity is set by the influences of all the biotic and abiotic factors over a long period of time -sustainable populations live at or below their carrying capacity

16. Biotic & Abiotic Influences Carrying Capacity: the maximum population size of a particular species that a given ecosystem can sustain sustainable population