instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Are humans a new or old species on the earth?
answer:
Are humans a new or old species on the earth?


question:
In paragraph 2, they had been untouched for centuries does the phrase à¥ˆ€œfrozen in timeà¥ˆ€ suggest about the figures.
answer:
In paragraph 2, what does the phrase à¥ˆ€œfrozen in timeà¥ˆ€ suggest about the figures?


question:
Oil is the most commonly used source of energy in the world.
answer:

What is the most commonly used source of energy in the world?