1.air pollution has many effects___ the environment and living organisms
a.on b.in c.of d.for
2. Water pollution ____ the death of all forms of life in the water bodies
a. results of b. occurs c. creates d. leads to
3._____ they are expensive, they last forever and never go out of style
a.when b. even though c.because d.as soon as
4._____ ocur when a large amount of water causes the rapid erosion of soil on a steep slope
a.tsunamis b.tornadoes c.mudslides d. avalanches
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Sinh Học lớp 12
