Contents

To avoid toxic chemicals, which of the following are now being to produce textile dyes?
a) plants                                               

b) animals
c) microorganisms                            

d) fungi


Biodegradable plastics decomposed by…….
a) bacteria                                            

b) animals
c) fungi                                 

d) both a and c


Which of the following may NOT cause pollution?
a) synthetic plastic                             

b) glass
c) biodegradable plastic

d) all of these


Which of the following modified organisms are more efficient in removing wastes from the environment?
a) plants                                               

b) animals
c) microorganisms                            

d) fungi


Some……..are in use to remove toxic wastes from the environment?
a) microorganisms                           

b) animals
c) fungi                                 

d) plants               


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