Answers

2016-04-22T13:57:12+05:30
Surrounding the Earth's tilted axis as it revolves around the sun. Seasons occur because Earth is tilted on its axis relative to the orbital plane, the invisible, flat disc where most objects in the solar system orbit the sun. Earth’s axis is an invisible line that runs through its center, from pole to pole. Earth rotates around its axis
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2016-04-22T16:51:17+05:30
Due to the revolution of the earthThe earths axis keeps on changing
half a year the northern hemisphere gets perpendicular suns rays and the other half year the southern part recieves perpendicular suns rays
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