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  1. Excess CO₂ acts like an extra blanket around Earth, trapping heat.

    Result? More floods, droughts, heat waves, wildfires, melting glaciers and rising seas.

    And it’s not just the air. Oceans absorb it too, becoming more acidic and harming marine life.

    Global ocean and land temperatures have been rising. Both sea surface temperatures and land temperatures have been rising. The lines show how each year's average compared with the 20th century average.
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