30 Nisan 2016 Cumartesi

                                    
                                 POLAR BEAR














Where do polar bears live?


      Polar bears can only survive in areas where the oceans freeze, allowing them to hunt seals living under, on, or in the frozen polar ice cap.  Polar bears live in Alaska, Canada, Russia, Greenland and some northern islands owned by Norway.






Temperatures in the Arctic


Polar bears have to  endure in the winter can range from  -40°C to -90°C. Polar bears have to be able to handle 100° difference in temperature between the  seasons.








THE IMPORTANCE OF POLAR BEARS

Polar bears are at the top of the food chain and have an important role in the overall health of the marine environment





     A polar bear's fur is not white!!  It is hollow. The fur reflects light.The hollow fur also traps the suns heat to help keep the polar bear warm.





                             
                                         THREATS

1.GLOBAL WARMING


Rising temperatures in the world’s oceans are causing sea ice to disappear for longer and longer periods during the late summer, leaving polar bears insufficient time to hunt. This is a worldwide problem.







If we don’t change our behaviour, polar bears won`t have many


 more years to survive because of global warming.







2.INDUSTRIAL IMPACTS

 Harmful chemicals that man is releasing into the environment. Man made pollution is a cause of death for polar bears.






                               WHAT CAN WE DO?


  Reduce greenhouse gas emission !

  Reduce, Reuse, Recycle!


  Encourage Others to Conserve!







                                                           PRACTICE


READ THE SENTENCES AND WRITE T/F

1. Polar bears can  survive in hot places .___________

2.Their fur is white.____________

3.Global warming affects polar bear negatively.________

4.We can save polar bears if we reduce to use of energy._______



Answer these questions below

1.Do you think polar bears are important? 

2.What can we do to reduce the negative effects of global warming?







Assigment:

 Find an animal in danger of extinction,tell your opinion how to ptotect them. Present it in front of the class.




































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