1.Soil pollution
many bad effects on ecosystems and human life.
A. does
B. causes
C. makes
D. All are correct
2.Many plants and animals die because of
A. noise pollution
B. environment
C. deforestation
D. A and B are correct
3.The air in this city is
by emissions from nearby factories. ...
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1040
16121
1007
`1/2 x + 150/100 x =2014`