1. Ecological Relationships

2. Biotic vs Abiotic
Biotic factors are living organisms in an environment
Abiotic factors: non-living factors in an environment

3. Population - All the members of one species
Community - All the members of several species in an area
Ecosystem - A large area containing a community and non-living factors
Biosphere - The area around the Earth where all living things are found

4. Types of organisms Producers – Create their own food (plants)
Herbivores – eat plants (zebra)
Carnivores – Eats other animals (lion)

7. 1-5 p.59

8. Types of interactions
Mutualism (+, +) Good for both organisms

9. Parasitism (+, -) Good for one bad for one

10. Commensalism (+, 0) Good for one, other is unaffected

11. Predation ( +, ) Good for one, other is dead

12. Competition (, ) two compete over same resources