La Nina - Cooler than normal year, El Nino - Warmer than normal year, Climate - Long term measurement of precipitation and temp., Orographic effect - Warm and wet air rises over a Mt., cool and dry sinks, Polar zone - cool and dry, Temperate zone - constantly changing, Tropical zone - warm and wet, Greenhouse gases - released from burning fossil fuels, Tundra - short growing season, frozen desert region, Deciduous forest - has 4 seasons, leaves fall from trees in Autumn, Desert - barren with little or no precipitation, Grasslands - flat land with mostly grass that grows,

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