The evolution of the atmosphere

Descrição

Science (C1) Mapa Mental sobre The evolution of the atmosphere, criado por plusterianne em 20-03-2014.
plusterianne
Mapa Mental por plusterianne, atualizado more than 1 year ago
plusterianne
Criado por plusterianne aproximadamente 10 anos atrás
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Resumo de Recurso

The evolution of the atmosphere
  1. Volcanoes gave out gases
    1. Things cooled down a bit & a thin crust is formed but volcanoes gave out lots of gas. Including carbon dioxide, water vapour and nitrogen
      1. According to this theory the early atmosphere was formed with mostly co2 and water vapour wit hno oxygen.
        1. The oceans formed when the water vapour condensed into oceans when the earth cooled.
          1. Earths surface was originally molten for millions of years. it was so hot that any atmosphere just boiled away into space.
          2. Complex organisms evolved
            1. Virtually no co2 left now
              1. Built up of oxygen in the atmosphere killed off some early organisms.
              2. Enter text here

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