symbiotic relationships

1. mutualism - everyone benefits
2. commensalism - one sided
3. parasitism - the practice of living as a parasite in or on another organism
4. competition - the act or process of trying to get or win something
5. predation - one organism kills and consumes another

aquatic

parasitism: Barnicle vs. crab

commensalism: sea anemones and feeder fish on whales

desert

parasitism: mistletoe vs. plant specific

commensalism: cactus wren

forest

parasitism: tics

grassland

parasitism: brown-headed cow-bird

artic

parasitism: tricha-nell