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KEY CONCEPT Biomes are land-based, global communities of organisms.

Learn about the six major biomes on Earth, from tropical rainforests to tundra regions. Understand the characteristics of each biome, such as vegetation, climate, and adaptations of organisms.

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KEY CONCEPT Biomes are land-based, global communities of organisms.

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  1. KEY CONCEPT Biomes are land-based, global communities of organisms.

  2. Earth has six major biomes. • A biome is a major community of organisms.

  3. Source: World Meteorological Organization • Tropical rain forest biomes produce lush forests. • warm temperature • abundant precipitation all year • Rainy/dry seasons

  4. Source: World Meteorological Organization • Tropical rain forest biomes produce lush forests. • Canopy  uppermost branches of the trees • Soil is very thin and low in nutrients

  5. Rapid City, South Dakota Source: National Oceanic Atmospheric Administration • Grassland biomes are where the primary plant life is grass.

  6. Grassland biomes are where the primary plant life is grass. • Temperate grasslands are dry and warm during the summer; most precipitation falls as snow. • Tropical grasslands are warm through the year, with definite dry and rainy seasons.

  7. Tucson, Arizona Source: National Oceanic Atmospheric Administration • Desert biomes are characterized by a very arid climate. • very low amount of precipitation • four types: hot, semi-arid, coastal, and cold

  8. Burlington, Vermont Source: National Oceanic Atmospheric Administration • Temperate forest biomes include deciduous forests and rain forests. • Temperate deciduous forests have hot summers and cold winters. • Deciduous trees are the dominant plant species.

  9. Temperate forest biomes include deciduous forests and rain forests. • Deciduous trees are the dominant plant species. • The temperate rain forests have a long wet season and relatively dry summer. • Temperate deciduous forests have hot summers and cold winters. • Ferns and moss cover the forest floor. 

  10. Banff, Canada Source: Environment Canada • The taiga biome is located in cooler northern climates. • boreal forest • long winters and short summers • small amount of precipitation

  11. Barrow, Alaska Source: National Oceanic Atmospheric Administration • The tundra biome is found in the far northern latitudes with long winters. • winter lasts 10 months • limited precipitation • permafrost

  12. Minor biomes, such as chaparral, occur globally on a smaller scale.

  13. Polar ice caps and mountains are not considered biomes. • Polar ice caps have no soil, therefore no plant community. • The climate and organisms found on mountains change as the elevation changes.

  14. Answer these questions on a sheet of paper. • What is the difference between deciduous trees and coniferous trees? • How have certain plants adapted to their environments? The grasslands? The deserts? Chaparral? • Why are mountains and polar ice caps not biomes? • Explain the trend for rainfall and temperature for the rainforest and the temperate grassland.

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