1. 1.3 E Interactions Within Communities
Ecology
1.3 E Interactions Within Communities

2. Interactions Energy is stored in the chemical bonds of sugar
producers – organisms that use outside energy source (sun) to make energy rich molecules
chemosynthesis – use chemicals to make energy

4. Interactions consumers – organisms that can’t make their own energy
Food chain – simple model of the feeding relationship in an ecosystem
Symbiosis – a close relationship between species

6. Interactions
Mutualism – both organisms benefit from each other (termites and protozoa)
Commensalism – one organisms benefits while the other is unaffected (anemone & fish)
Parasitism – one is benefited while the other is harmed (lamprey & shark)

9. Pilot fish swim along side a shark

10. Interactions
Niche – requirements that an organism has for its survival (food, mate, shelter, avoid danger)
Predator-Prey Relationship – predators limit the size of the prey population
Cooperation – organisms help each other (schools of fish, flocks of geese)

11. Interactions Producer Consumer Symbiosis Mutualism Commensalism
Parasitism
Niche
Cooperation