Producer
An organism that can make its own food.
Consumer
any organism that can't make its own food. Consumers have to feed on producers or other consumers to survive.
Omnivore
organism that obtains energy by eating both plants and animals
Herbivore
An organism that eats only plants
Carnivore
organism that obtains energy by eating animals
predator
An animal that hunts other animals for food
parasite
An organism that feeds on a living host
habitat
Place where an organism lives
Niche
An organism's particular role in an ecosystem, or how it makes its living.
Population
A group of individuals that belong to the same species and live in the same area
Community
a group of people living in the same place
Ecosystem
A biological community of interacting organisms and their physical environment.
Biosphere
the part of Earth where life exists
pollution
Release of harmful materials into the environment
renewable resource
Any natural resource (as wood or solar energy) that can be replenished naturally with the passage of time