Unit 2 - Week 5

Biodiversity

the variety of life in the world or in a particular habitat or ecosystem.

climate

Overall weather in an area over a long period of time

weather

The condition of Earth's atmosphere at a particular time and place.

Latitude

Distance north or south of the equator

greenhouse effect

Natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases

global warming

An increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes)

Niche

An organism's particular role in an ecosystem, or how it makes its living.

competition

the struggle between organisms to survive in a habitat with limited resources

Predation

An interaction in which one organism kills another for food.

Symbiosis

A close relationship between two species that benefits at least one of the species.

Mutualism

A relationship between two species in which both species benefit

Commensalism

A relationship between two organisms in which one organism benefits and the other is unaffected

Parasitism

A relationship between two organisms of different species where one benefits and the other is harmed