Which of the following gases cause global warming?

(i) What is global warming? How global warming affects the rapid change of climate? (ii) What are the bad impacts of climate change? (iii) How climate change affects the environment of Bangladesh (iv) How global warming can be minimized (v) What should be the role of students to protect the environment.

A

(i) Global warming is the main natural reason and using harmful chemicals in everyday life the main reason created by men. The climate is changing rapidly that result in the rise of the earth's average temperature

B

(ii) Climate change impacts include floods, cyclones, storm surges and drought, ice sheets melting which will seriously affect the agriculture and livelihood especially at the poor.

C

(iii) Bangladesh is one of the largest deltas in the world which is highly vulnerable to Natural Disasters because of its Geographical location, Fiat and low-lying landscape, Population density, Poverty, Illiteracy, Lack of Institutional setup, etc.

D

(iv) To reduce the bad impact of climate change people should be aware of. Tree plantation can reduce global warming which is the main natural reason for climate change. Stop using harmful chemicals can reduce environmental pollution which is the main man

E

(v) Students should be careful to protect the environment and raise awareness. Thus the students can play a vital role to reduce bad impact of climate changes.

Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?

A

CO₂

B

H₂

C

SO₃

D

N₂

Which one of the following is the correct percentage of the two green house gases that contribute to the total global warming?

A

N₂O-6%, CO₂ -86%

B

Methane-20%, N₂O-18%

C

CFCs -14%, Methane-20%

D

CO₂-40%,CFCs-30%

Which one of the following is not a cause for present global warming and climate change ?

A

CFC emission

B

Carbon dioxide emission

C

Deforestation

D

Methane emission

What is main cause of global warming as inferred from the passage?

A

A continued rise in sea levels

B

Emission of carbon dioxide.

C

Melting of Ice-caps in the polar continents

D

Frequent droughts in many parts of the earth

what is the main cause of global warming as inferred from the passage ?

A

A continued rise in sea levels

B

Emission of carbon dixide

C

melting of ice-caps in the polar counineuts

D

Frequent droughts in many parts of the earth

Which of the following is NOT a consequence of global warming?

A

Rising humidity

B

Changing seasons

C

Ocean alkalinity

D

Ecosystem destabilisation

Which of the following is not as a consequence of global warming?

A

rising sea level

B

increased agricultural productivity worldwide

C

worsening health effects

D

increased storm frequency and intensity

Which of the following gas contributes the maximum to the phenomena of global warming?

A

Methane

B

Chlorofluorocarbon (CFC)

C

Nitrogen dioxide

D

Carbon dioxide

Which of the following is least likely to be an effect of global warming?

A

Increased frequency of hurricanes

B

Loss of fertile delta region as for agriculture

C

Decreased rate of photosynthesis in vegetation

D

Shrinking of the polar ice regions

Which of the following gases cause global warming?

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