BIOL-UA 12 Lecture 24: Lecture 24

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Lecture 24: introduction to ecology and the biosphere: ecology: Scienti c study of the interaction between organisms and their environments, relationships among organisms and their interaction with the environment and patterns and causes of the abundance and distribution of these organisms: ecosystem: The biotic community and its abiotic components functioning as a system: studying an ecology involves studying: Different kinds of interacting groups across space and time (ecosystem ecology and landscape ecology) Biosphere: habitat types repeat themselves across the world: Tropical forests can be found in both tasmania and costa rica. Similar in climate and vegetation: climate in uences terrestrial and aquatic terrains: Climate: average weather conditions in an area over a long period of time. Controlled by 4 important abiotic factors: temperature, precipitation, sunlight and wind. Largely determined by the input of solar energy and the planet"s movement in space. The warming effect of the sun causes temperature variations which drive evaporation and the circulation of air and water.

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