Interactions in Ecosystem Worksheet

How an organism obtains food, the type of food the organism eats, and what other organisms eat.
The struggle between organisms to survive as they use the same limited resources.
An interaction in which one organism kills another for food or nutrients.
Any relationship in which two species live closely together and that benefits at least one of the species
A type of symbiosis between two species in which one species benefits and the other species is neither helped nor harmed.
A type of symbiosis in which both species benefit from living together.
A type of symbiosis in which one organism lives with, on, or in a host and harms it.
Groups of organisms work or act together for common or mutual benefits.
How species with overlapping niches compete for resources.
Species that are not native to a habitat and can out-compete native species in an ecosystem.
When entire communities in an ecosystem change over time.
An environmental factor that caused a population to decrease in size.