1. Ecosystem Notes Organism: a living thing
Individual: one single organism
Population: all the individuals of one kind (one species) in a specified area at one time
Community: all the interacting populations in a specified area
Ecosystem: a system of interacting organisms and nonliving factors in a specified area
Biotic: living organisms and products of organisms
Abiotic: nonliving; ex. Sunlight, rocks, temperature, rainfall

2. Consumer: an organism that eats other organisms
Producer: an organism that is able to produce its own food through photosynthesis
Consumer: an organism that eats other organisms
Primary consumer: eats producers
Secondary consumer: eats primary consumers
Tertiary (3rd level) consumer: eats secondary consumers
Decomposer: an organism that consumes parts of dead organisms
Predator: an animal that captures another for food
Prey: an animal eaten by a predator

3. Carnivore: a consumer that is a meat eater, only eats other animals Herbivore: a consumer that is a plant eater Omnivore: a consumer that eats both meat and plants Food chain: a pathway of food and energy through an ecosystem Food web: a complex network of feeding relationships made of many interconnected food chains Detritus: decaying organic material