absorber of solar radiation for warming the atmosphere.

absorber of long wave radiation from earth.

transparent to emissions from earth for passage into outer space.

transparent to both solar radiation and long wave radiation from earth.

Match the items in column A and B. Column A Column B (a) Greenhouse effect (i) U.V. Rays (b) B.O.D. (ii) Excess growth of aquatic flora (c) Acid rain (iii) A decrease in birds population (d) Eutrophication (iv) Rise in temperature (e) Snow blindness (v) SO 2 and NO 2 (f) Biomagnification (vi) Organic waste in water

a-iv The greenhouse effect is a naturally occurring process that aids in heating the Earth's surface and atmosphere. b-vi Biological oxygen demand is the amount of oxygen required to remove waste organic matter from water. These take place in the process of decomposition of aerobic bacteria. c-v A rain in which the precipitation is usually acidic is called acid rain. It contains high levels of hydrogen ions. It is caused when sulphur dioxide and nitrogen dioxide emission reacts with water molecules in the air and results in producing acids. d-ii Eutrophication is the biological enrichment of the water bodies due to the development of algal blooms as a result of the introduction of inorganic nutrients (nitrates and phosphates) as effluents from industries or agrochemicals. e-i Snow blindness is the blindness due to the cornea becoming opaque because of UV-B radiations. f-iii Biomagnification or Biological amplification is an increase in the concentration of certain persistent non-degradable substances in successive trophic levels of a food chain. It adversely affects human beings and the population of many birds. Column A Column B (a) Greenhouse effect (iv) Rise in temperature (b) B.O.D. (vi) Organic waste in water (c) Acid rain (v) SO 2 and NO 2 (d) Eutrophication (ii) Excess growth of aquatic flora (e) Snow blindness (i) U.V. Rays (f) Biomagnification (iii) A decrease in birds population

EASY

Earn 100

Sulphur dioxide is a greenhouse gas.

50% studentsanswered this correctly

Important Questions on Natural Resources

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

Which among the following gases absorb long wavelength infrared radiation emitted from the earth’s surface?

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

Which of the following is responsible for green house effect?

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

Which gas is not responsible for global warming

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

Which of the following greenhouse gases has the maximum contribution towards global warming?

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

Which is responsible for increases in global temperature?

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

Which factor is responsible for green house effect?

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

Which one of the following is a Greenhouse gas?

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

Greenhouse gases are

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

Define greenhouse effect.

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

Scientist believe that greenhouse effect is the result of

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

In the event of global warming, which one of the following is most likely to occur?

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

What causes global warming?

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

Match the items in column A and B.

Column A	Column B
(a) Greenhouse effect	(i) U.V. Rays
(b) B.O.D.	(ii) Excess growth of aquatic flora
(c) Acid rain	(iii) A decrease in birds population
(d) Eutrophication	(iv) Rise in temperature
(e) Snow blindness	(v) SO₂ and NO₂
(f) Biomagnification	(vi) Organic waste in water

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

Excess of greenhouse gases cause

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Science>Biology>Natural Resources>The Breath of Life: Air

Assertion : El Nino is a climatic change which causes deleterious environmental changes.

Reason : Increased tropospheric ozone due to El Nino cause shift of climatic regions.

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

What would be the consequences of global warming?

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

Global warming is related to the:

EASY

Science>Biology>Natural Resources>The Breath of Life: Air

State two ill effects of global warming.

MEDIUM

Science>Biology>Natural Resources>The Breath of Life: Air

Which of the following is true about the El Nino effect?