1. Relationships in a Community
Predation and Symbiosis

2. Predation:
-One animal (the predator) kills and eats another animal (the prey)

3. Symbiosis- -When two different organisms have a close relationship.
There are 3 kinds.

4. 1. Mutualism- -When both organsims benefit from the relationship.
-examples:

5. Commensalism- -When one organism benefits and the other is unaffected.
-examples:

6. Parisitism:
-When one organsim (the parasite) benefits and the other (the host) is harmed, but not killed.
DIFFERENT FROM PREDATION!

7. niche- the role an organism plays in it’s community (Examples:
producer, herbivore, carnivore, omnivore, predator, prey, parasite, host, etc. ) as well as what physical space it occupies. Only one species per niche!=competitive exclusion principal
Biodiversity-
Variety of organisms in a community
High biodiversity= rainforest, coral reef
Low biodiversity= ice caps, desert