predator/prey/carnivore/herbivore/omnivore

energy pyramid

shows the amount of energy available to pass from one level of a food chain to the next

food web

shows the interactions among many different food chains in a single ecosystem

omnivore

an animal that eats both plants and animals

carnivore

an animal that eats only meat

herbivore

an animal that eats only plants

prey

animal hunted or caught for food

secondary consumer

animal that eats herbivores; carnivore; second-level consumer

tertiary consumer

animal that eats secondary consumers; carnivore eats another carnivore; third-level consumer

predator

animal that hunts and eats other animals

primary consumer

animal that only eats plants; herbivore; first-level consumer