a group of animals of the same species which live together.
an organism the eats only animals
a relationship in which one organism benefits and the other one is not helped or harmed
the struggle among organisms for an essential factor that is in short supply in the environment
an organism that breaks down dead organisms and returns this material to the soil
an illustration shaped like a pyramid and divided into layers to show the energy relationships between organisms in an ecosystem
a plant that grows on the outside of another plant but does not take nourishment from the plant on which it grows.
the passing of materials and energy from one organism to another
a method of illustrating the interrelationships between food chains in an ecosystem.
an organism that eat only plants
an organism that exists without the aid of other members of the same species
a relationship that is beneficial to both organisms involved
an organism that eats plants and animals
an animal that feeds on other animal
animal that predator eats
an animal that eats dead bodies
an insect that lives in a colony