The hazards of radiation belts include
A
deterioration of electronic circuits
B
damage of solar cells of spacecraft
C
All of the above
D
adverse effect on living organisms
The great Victoria Desert is located in
A
Canada
B
West Africa
C
Australia
D
North America
The light of distant stars is affected by
A
the earth's atmosphere
B
interstellar dust
C
both (a) and (b)
D
None of the above
Which is the Smallest Country in the World?
A
France
B
Egypt
C
Vatican City
D
France
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