Ecosystems

A living thing in an ecosystem, such as a plant, an animal, or a bacterium.

• Abiotic factor

• Biotic factor

• Niche

• Community

The effects on the ecosystem that are a result of the nonliving parts of that ecosystem.

• Biotic Factors

• Abiotic Factors

• Populations

• Communities

All the organisms of the same kind that live in a particular area.

• Nice

• Community

• Population

• Ecosystem

All the populations that live together in the same place.

• Community

• Population

• Organism

• Ecosystem

A relationship between two kinds of organisms that lasts over time.

• Population

• Community

• Symbiosis

• Competition

The struggle among organisms for resources in an ecosystem.

• Competition

• Population

• Abiotic Factor

• Biotic Factor

The role a species plays in a food web.

• Population

• Niche

• Community

• Ecosystem

Type of relationship in which one organism benefits at the expense of an organism of another species.

• Parasitism

• Commensalism

• Mutualism

Type of relationship in which one organism benefits without harming the other.

• Parasitism

• Commensalism

• Mutualism

Type of relationship in which both organism benefit from each other.

• Parasitism

• Commensalism

• Mutualism