Answer:
because time period does not depend upon the weight of the world
Answer:
The rotation of the earth
Explanation:
The rotation of the earth means that different sides of the earth are facing the sun at different times.This means that different parts are dark or bright, depending on night or day.
The tilt of the earth causes seasons, and the revolution of the earth creates years.
The Volga River starts in the <span>Valdai Hills and drains into the Caspian Sea.</span>
