180° meridian is called

How much time does the earth take to move $1^{\circ }1^\backslash circ$ longitude?

Standard meridian of India is

The Indian standard time is

Universe started some …………… billion years ago.

Earth travels around the sun at a speed of ………….. km/h.

Human beings arrived on earth ………….. years ago.

First life appeared on planet Earth in

Heavy substance gold most prevalent in

Alfred Wagener a geophysicist of