The ozone layer is at height of________kilometers from the surface of the Earth?

Related Mcqs:

What is it called when the Earth is closest to the sun _____________?

A. Aphelion B. Perihelion C. Apoapsis D. Periapsis...

What are the three basic units of measurement for the metric system?

A. Metre, litre and gramme B. Centimetre, kilograms and metric C. Kilogram, mass and energy D. Kelvin, cd and mole...

Which of the following letter does not represent in periodic table?

A. X B. K C. J D. N...

Albert Einstein was a____________?

A. Physicist B. Physician C. Chemist D. Biologist...

Sound travels about ___________times faster in water than in air.

A. 2 B. 3 C. 4 D. 5...