The coldest natural temperature ever recorded on earth is ____________.

The hottest natural temperature ever recorded on earth is ___________

Fill in the blanks: The coldest temperature in the world was measured in the ___continent.

The oldest recorded alga is …………

For energy, the earth is:

If the earth did not have an atmosphere, would its average surface temperature be higher or lower than what it is now ?

What is the rarest natural element in the earth?

Complete the analogy : Shape of the Earth at equator: Bulged :: shape of the Earth at poles:________________

How many natural satellites does the earth have ?

If there is no greenhouse effect, then the average temperature at surface of earth would have been