A) The earth's atmosphere scatters the light and creates a blue effect.
B) The scientists have discovered that the colour of the earth is blue.
C) 70% of earth's surface is covered by water
D) Both (a) and (b)
Correct Answer: D
Solution :
70% of its surface is covered by water, so earth is also known as watery planet. Also the earth's atmosphere scatters the light and creates the blue effect.
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