Unit 2 Chapter 3 Communities & Biomes

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Presentation transcript:

Unit 2 Chapter 3 Communities & Biomes

Limiting factors Any biotic or abiotic factor that restricts the numbers & distribution of organisms

Succession: changes over time Primary succession Takes place on land where there are no living organisms

Succession: changes over time Secondary succession The sequence of changes that take place after an existing community is disrupted in some way Ex: forest fires, volcanoes, hurricanes, etc

Biomes Major geographic communities with similar climates and vegetation

Aquatic biomes Photic zone = the portion that is shallow enough for light to penetrate Ex: intertidal zones, estuaries, coral reefs

Aquatic biomes Aphotic zones = deeper waters that never receives sunlight Ex: the abyss

Terrestrial Biomes Tundra

Terrestrial Biomes Taiga

Terrestrial Biomes Desert

Terrestrial Biomes Grasslands

Terrestrial Biomes Temperate (deciduous) Forest

Terrestrial Biomes Tropical Rain Forests

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