Question

Give reasons to refer earth as “Blue Planet” (4)

Answer 1

Explanation:

From the outer space, the earth appears blue because its two-thirds surface is covered by water. It is, therefore, called a blue planet. Our earth has only one satellite, that is, the moon. Its diametre is only one-quarter that of the earth.

Answer 2

Answer:

From the outer space, the earth appears blue because its two-thirds surface is covered by water. It is, therefore, called a blue planet. Our earth has only one satellite, that is, the moon. Its diametre is only one-quarter that of the earth.