Question

What do the green and blue areas of the Earth depict?
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Answer 1

Green=Earth
Blue=Water

This is your ans

Answer 2

Answer:

Water blocks the radiation of white light (sunlight). In reality, the sunlight looks white from a mixture of lights of many different colors. As illumination enters the water, the water consumes white light and reflects just blue light, lights of all colors. The earth from space, thus, looks blue.