Question # 1

At present population is 2.6 percent, in how many years the population of Pakistan will double.

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47 years

37 years

27 years

17 years

Teh total number of persons living in an area is called.

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Species

Population

Community

habitat

The proportion of carbon dioxide in air is.

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40 percent

0.4 percent

0.04 percent

0.004 percent

Where the ozone make a protective layer?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

------------------ is one of oldes sources of heat.

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Petroleum

natural gas

None

Coal

The temperature in measophere can be low as.

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-150 ^oC

-100^oC

100 ^oC

-200 ^oC

------------ province of Pakistan is rich with minerals.

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Punjab

Sindh

Balochistan

NWFP

At present average annual population growth rate in Pakistan is 2.6 percent. In how many year it will become double?

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47 year

37 year

17 year

27 year

Major cause of depletion of zone layer is.

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Oxygen

Hydrogen

Chlorofluorocarbons

Hydrocarbons

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