1 Human activity is leading to the extinction of species and habitats and ____ of bio-diversity.

A. lose B. losing C. loss D. lost

2 The ozone layer is an invisible layer of protection around the planet that protects us ____ the sun's harmful rays.

A. away with B. from C. under D. out of

3 Deforestation simply means clearing of the green cover and making that land available ____ residential,industrial or commercial purpose.

A. on B. by C. for D.to

4 Air pollution can have serious impacts ________breathing.

A.In B.at C.about D .on

5 It is predicted that over the next few decades many species will die_______ as once fertile areas turn to desert

A .off B.out C.up D.down

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