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Ecosystems (Case study: Union glacier, Antarctica (Walking/trekking,…
Ecosystems
Case study: Union glacier, Antarctica
Walking/trekking, climbing, visit penguin colonies--visitors stay >5m away, groups of 20.
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Biomes
Forest
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Tropical
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6% of the Earth's surface
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Different levels 
Deserts
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Cold at night, hot during the day, dry
Xerophytic plants, e.g. cacti roots are either very deep to reach water table, or shallow and spread out to catch the most rainfall. Plants have thick, waxy leaves to hold water.
Animals live mostly in burrows, e.g. snakes, spiders, meerkats.
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Polar regions
Arctic tundra
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Animals include foxes, reindeer, polar bears, sharks, whales, krill, phytoplankton etc. some animals migrate during winter
Antarctica
Lichen, ferns, algae--shallow roots, resistant to harsh winds. 100 species of moss, 300 species of lichen.
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