Corrosion of marble is also called
Marble-disorder
Marble-erosion
Marble cancer.
Marvellous
C.
Marble cancer.
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Corrosion of marble is also called
Marble-disorder
Marble-erosion
Marble cancer.
Marvellous
C.
Marble cancer.
Describe the threat to the beauty of the Taj Mahal.
Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
What are the main causes of smoke?
Which problem arises by air pollution?
What is pollution?
What is air pollution?
Which gases are released by vehicles?
Which gas reduces the capacity of the blood to carry oxygen?
What is smog?
Which gases are responsible for acid rain?
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Mock Test Series