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UNIT
                    2





                Different Types
                 of Pollution











                    Different Types of                                                                 ATR3-3-02




                    Pollution












                                                                                                              1
                                                   As we try to make our lives more convenient ,
                                                pollution has become a more serious issue.

                                                There are three kinds of pollution.




                                                   One kind of pollution is air pollution. Smog,

                                                mostly from cars and factories, is one cause of
                  algae polluted water
                                                air pollution. Air pollution can make it hard for

                                                people to breathe. Air pollution can also change

                                                the weather. For example, air pollution from

                                                                                  2
                                                cars and factories traps  heat from sunlight.

                     ATR3-3-V02                 This makes the Earth warmer. Scientists call this

                                                global warming.



                    Vocabulary

                    1  convenient : easy, useful, or suitable for a particular purpose
                    2  trap : to catch
                    3  excess : more than is needed, desired, or required
              18    4  fertilizer : chemicals that help plants grow better
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