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Biomes (Concepts (two abiotic factors (climate, soil), Earth's surface…
Biomes
Concepts
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Biomes vary from extremely simple as tundra to more complex grasslands, temperate forests, tropical rain forests
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climate undergone cycles of cooling & warming and continents shift position due to continental drift
The Current World Biome
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Polar Biomes
Arctic Tundra 
Boreal Coniferous Forests
Dry Temperate Biomes
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Shrubs & Woodland
Alpine Tundra
Tropical Biomes
Tropical Rainforests
Tropical Grasslands & Savanas
World climate change
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Effect of Earth's Tilt
by Sep 23, Earth has made one-quater orbit
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December 21 or 22, South Pole points directly as possible toward the sun; winter
the sun moves back toward equator with another quarter orbit arriving there at March 21, the vernal equinox
Continental Drift
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