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Biology

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  • Why trees are important ?
    Because they take carbon dioxide and releas oxygen.
  • What is deforestation ?
    Deforestation is the process by cutting trees .
  • How does air pollution affect in our health ?
    Breathing in polluted air is very bad for us and some disease .
  • How people pollute our atmosphere ?
    They pollute with particles of other gases.
  • How is created smog ?
    When particles in the air combine with ozone , they crate smog.
  • When deforestation happen ?
    Deforestation happens when people destroy forest by cutting tress.
  • For what people cut trees?
    To make furniture , To burn as a fuel , To clear land for farming , To clear land for cities , To clear land for mining.
  • What is ozone ?
    Ozone is a greenhouse gas that it can be good and bad.
  • What are the diseases that air pollution causes ?
    Asthma and bronchitis .
  • One city planner says : The city is expanding, we need to clear more land . Those is in favour or against of deforestation ?
    In favour of deforestation.
  • Our atmosphere consists mainly of two gases . How are called ?
    Nitrogen and oxygen .
  • Why new cars are less polluting than older ones ?
    Because in older cars is a device that changes exhaust gases to carbon dioxide .
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