2 Biomes Regions of the world with similar physical environments Named for most conspicuous types of vegetationClimate factorsRainfall (precipitation)TemperatureAltitudeLatitudeBoundaries are indistinct
3 Six Major Biomes Tropical Rain Forests Grassland Desert Temperate Tropical/Subtropical GrasslandTemperate GrasslandDesertTemperateTemperate Deciduous ForestTemperate Rain ForestTaigaTundra
4 Tropical Rain Forests Equatorial lowlands Constant temperature and abundant rainfall all year longMany arboreal animalsFew terrestrial animals
8 Temperate Grassland Hot, humid summer and cold winter Precipitation as winter snow and heavy spring and summer rainShort and tall grasses; trees found only near streamsWide variety of animal lifeLarge herbivoresSmaller animals build burrows
14 Temperate Rain Forests Cold winters and hot summersAbundant rain and snowfallConifers (redwood, firs, pines, spruce) retain their needles.Needles conserve water in dry summer and shed snow in cold winterWide variety of animal life
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