An organism that makes its own food
An autotroph, usually a photosynthetic organism. Collectively, autotrophs make up the trophic level of an ecosystem that ultimately supports all other levels.
Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates
An organism that cannot make its own food.
A person who purchases goods and services for personal use
a flesh-eating animal
A consumer that eats only plants.
A carnivore that feeds on the bodies of dead organisms.
An organism that breaks down wastes and dead organisms