Hippocrates mentioned air pollution in ________________ BC.
A. 400
B. 500
C. 620
D. 354
Author: Aroma Ann
The total number of major languages in India are _________________.
A. 18
B. 17
C. 16
D. 15
On the average, about what percentage of the solar energy that strikes the outer atmosphere eventually reaches the earth’s surface?
A. 5%
B. 15%
C. 30%
D. 50%
E. 70%
How many types of habitats are there in a biosphere?
A. 4
B. 2
C. 3
D. 6
The combined albedo of the earth and the atmosphere is approximately __________________ percent.
A. 4
B. 10
C. 30
D. 50
E. 90
A red shirt ________________.
A. Selectively absorbs red wavelenghts of visible light and scatters the rest
B. Selectively scatters red wavelenghts of visible light and absorbs the rest
C. None of the above
D. Both A & B
