What is the substance inside a egg, which provides food for the embryo,known as?
How many climatic regions is the lithosphere divided into?
Who is the author of the science fiction "Nightfall"?
Where was the famous environmentalist green party orginated?
How many pounds does a gallon of water weight?
Who invented nylon?
Who wrote "Space Machine "?
Frederick Pohl and C. M Kornbluth
In which year Uranus was discovered ?
What does a polarimeter measures?
Rotations of the plane of polarization of light.
Which is India's super computer?
What are nu, xi, omicron etc?