CARBON - two major biome's

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  • BIOME's
    • Tropical rainforest - BIGGEST BIOME
      • Covers around 7% of the earth's suface (S. AMERICA and BRAZIL), used to cover 14%.
      • Rainfall can reach up to 400 inches per year.
      • Epiphytes - such as orchids, grow on surfaces of trees.
      • More than 20% of the world's oxygen is produced in the AMAZON rainforest.
        • One of the largest organic stores of CARBON - AMAZON sequesters 17% of all terrestrial carbon.
      • 1% of 16,000 tree species on earth store around 50% of the biome's carbon.
        • One of the largest organic stores of CARBON - AMAZON sequesters 17% of all terrestrial carbon.
      • Stores around 650 billion tonnes of carbon - when burned, lots of CO2 released
    • Tundra - SMALLEST BIOME
      • ARCTIC - northern hemisphere
        • Impossible tree growth due to frozen soil. MOSS and LICHEN's grow.
        • During summer, top layer melts, leaving soggy marshes, lakes, bogs and streams.
        • Reaches temperatures of -28 to -50*C.
      • ALPINE
        • Soils at high altitude means tree growth is not possible.
        • Does not have permafrost like the arctic and is better drained.
        • mountain goats, sheep, grasshoppers, dwarf shrub.
        • -12 to 10*C annual temperatures, and 12 inches of rainfall.
      • ANTARCTIC
        • LICHENS, MOSS and ALGAE.
        • no precipitation, but averages at -49*C.
        • Penguins, seals, crustaceans (crabs), fish (cod).
      • Human activity affects tundra by reducing the ozone layer and allowing UV and heat to enter the biome.
      • Has 6-10 inches of precipitation a year.
      • Small amount of C is stored in plants and taken in by them (Shrubs and grass)

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