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People often call the plastic bags "white pollution" .1.,it becomes the worst invention for the human .It is reported that it takes 100 ﹣200 years to break down the plastic bags completely .However ,a 16 ﹣year ﹣old high ﹣school Canadian student called Daniel Byrd discovered the way to break down the plastic bags!

The idea of the invention comes from his housework . He always helps her mother do the housework.Every time,when he opens the closet,the plastic bags fly out.This makes him very angry. 2..With his teacher's help,he found that when he put the two germs (細(xì)菌) mixture up and that made the plastic bags break down quickly.

He made an experiment first . He put some earth germs and plastic bags together . After 12weeks,he found the plastic bags had been broken down. 3..The experiment also showed that the plastic bags could be broken down in three months .And they only gave out some water and little carbon dioxide (CO2).

Now Byrd has got 30 thousand dollars from his invention. 4..He has also got a lot of award from many universities.

A.So he thinks how to deal with these plastic bags

B.Because it is hard to break down

C.He wants to go to college with his money

D.Then he made another experiment

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