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Chapter 27: Biomes (World Climate (Continental Climate (Desert Islands -…

- - - - And in the Northern Hemisphere, the sun has reached its highest point in the sky
      - North of the Artic Circle, the sun is visible even at midnight
      - At summer solstice, June 21 or 22, the North Pole point as directly toward the sun as possible
- - - - At about the time life was beginning to move onto land and rhyniophytes were evolving, the continents drifted together
      - Supercontinent - Pangaea
      - Laurasia
    - - In the early Mesozoic Era, just after the Permian Period, the climate worldwide may have warmed
      - In the Jurassic Period, Pangaea began to break up; the North American segment moved northwestward
      - Tethys Sea
      - The latest major event in continental drift was (is) the collision of South America and North America
    - - While all life was still aquatic and nothing lived on land, several separate continents were distributed in a vast ocean
      - In the Southern Hemisphere was a giant continent called Gondwanaland
        
        Composed of
        
        India
        
        Australia
        
        Africa
        
        Antarctica
        
        South America
  - - - The presence of the large continent of Antarctica at the South Pole allows huge amounts of fresh water to accumulate there as snow fields and glacial ice