Tag: global environmental change

Questions Related to global environmental change

Which one of the following pair is mismatched?

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. Nuclear power- radioactive wastes

  2. Solar energy- greehouse effect

  3. Fossil fuel burning- release of CO$ _2$

  4. Biomass burning- release of CO$ _2$

Show answer
Correct Option: B
Explanation:
Nuclear power will generate lots of radioactive wastes which is harmful to the animals and plants.
Solar energy coming to the earth is not responsible for the greenhouse effect. It is the increase in greenhouse gasses in the atmosphere like CO$ _2$, methane and CFC which is released by complete combustion of fossil fuels or biomass in industries or transportation vehicles that prevent the re-radiation of infrared radiation from the earth and result in the increase in temperature of the earth.
The burning of fossil fuels and biomass releases carbon dioxide which thereby causes global warming. 
Therefore, the correct answer is option B.

Which of the following is not a greenhouse gas?

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. $CH _4 $

  2. $N _2O$

  3. Water vapor

  4. $CO _2$

  5. None of the above

Show answer
Correct Option: E
Explanation:

A greenhouse gas is any gaseous compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming. The most significant greenhouse gases are water vapor ($H _2O$), carbon dioxide ($CO _2$), methane ($CH _4$) and nitrous oxide ($N _2O$), according to the Environmental Protection Agency (EPA).

Which of the following set is green house gases?

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. CFC, CH$ _4$, CO$ _2$, N$ _2$O

  2. CO$ _2$, CH$ _4$, N$ _2$,O$ _2$

  3. CO$ _2$, CH$ _4$, N$ _2$,O$ _3$

  4. CO$ _2$, CFC, N$ _2$,O$ _2$

  5. CO$ _2$, CFC, CH$ _4$, N$ _2$O, O$ _3$

Show answer
Correct Option: E
Explanation:
  • Greenhouse gasses generally traps the radiations of the earth which leads to an increase in the temperature of the earth and global warming.
  • The greenhouse gasses include water vapor, carbon dioxide, methane, nitrous oxide, and ozone.

So, the correct answer is option E.

Which one of following pairs of gases is the major cause of greenhouse effect?

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. $CO _2$ and $O _3$

  2. $CO _2$ and $CO$

  3. $CFC$ and $SO _2$

  4. $CO _2$ and $N _2O$

Show answer
Correct Option: A
Explanation:

The major greenhouse gases responsible for greenhouse effect are carbon dioxide, ozone, methane and water vapour. These gases acts like a thick warm blanket outside that surrounds this planet and regulates climate control. Water vapour causes about 36-70% of the greenhouse effect on earth, carbon dioxide CO$ _2$, which causes 9-26%; methane, which causes 4-9%, and ozone, which causes 3-7%.

Therefore, the correct answer is option A.

Warm ocean surge of Peru current recurring every 5-8 years or so in the East Pacific of South America is widely known as.

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. Gulfstream

  2. Aye Aye

  3. El Nino

  4. Angox

Show answer
Correct Option: C
Explanation:
El Nino is a climate cycle in the Pacific Ocean with a vast impact on global weather patterns. It begins when warm water in the western tropical Pacific Ocean shifts eastward along the equator toward the coast of South America more specifically Peru. This warm water pools near Indonesia and the Philippines. It recurs every 5-8 years. Thus, the correct answer is option C.

The best solution to combat greenhouse effect is

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. To use diesel vehicles

  2. To stop infra-red from entering the earth

  3. Afforestation and growing abundant plants

  4. All of the above

Show answer
Correct Option: C
Explanation:

The greenhouse effect is the phenomenon in which the greenhouse gases trap the heat in the Earth's atmosphere which results in an increase in the temperature. Carbon dioxide is one of the greenhouse gases which is utilised by the green plants for the purpose of photosynthesis. This results in the reduction of the greenhouse gases and thereby, the global warming. So, the greenhouse effect can be reduced by growing new plants through the process of afforestation.

Thus, the correct answer is option C. 

Greenhouse effect corresponds to 

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. Water pollution

  2. Global warming

  3. $SO _2$ poisoning

  4. Production of green manure

Show answer
Correct Option: B
Explanation:

The greenhouse effect is the phenomenon in which the percentage of poisonous gas like sulphur dioxide, carbon dioxide, carbon monoxide etc. increases which traps the heat in the Earth's atmosphere. The greenhouse gases are NO$ _2$, methane, CO$ _2$, water vapour and ozone. The increase in the heat in the Earth's atmosphere results in the global warming. 

Thus, the correct answer is option B. 

World climate is threatened by increase in the concentration of

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. Oxygen

  2. Nitrogen

  3. Water vapours

  4. Carbon dioxide

Show answer
Correct Option: D
Explanation:

Level of carbon dioxide is continuously increasing in the air due to its constant release by burning of fossil fuels in automobiles, industries etc. As a result, the temperature of the earth is on a constant rise. This has led to global warming and the greenhouse effect. The ozone layer is getting depleted causing harmful UV rays to reach the earth and cause serious ill effects. Apart from this, glaciers are constantly melting due to increase in temperature.

So, option D " Carbon dioxide" is the correct answer.

Which of the following is not a green house gas ?

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. Methane

  2. Carbon dioxide

  3. Nitrous oxide

  4. Ammonia

Show answer
Correct Option: D
Explanation:

Ammonia is not a green house gas. Methane, carbon dioxide and nitrous oxide are all greenhouse gases. They contribute to the greenhouse effect. Ammonia has no effect on the green house effect. So, option D ammonia s the correct answer.

All of these will directly or indirectly reduce the contribution to greenhouse gases except 

biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

  1. Encouraging the use of public transportation 

  2. Walking

  3. Biking

  4. Increasing the cost of car ownership and fuel costs

  5. Creating car-free zones

Show answer
Correct Option: C
Explanation:
A. Encouraging the use of public transport will reduce air pollution as this will lead to less use of cars and other personal transport vehicles. If many people instead of travelling by their personal transport vehicle, will use the public transport, then there will be less emission of green house gases.
B. Walking instead of using a vehicle for travelling can also reduce green house gases emission as no transport vehicle will be used and no harmful gases will be released.
C. Biking will contribute to air pollution as green house gases like carbon dioxide are released as the fuel is burnt in the engine of the bike.
D. Increasing the cost of car ownership and fuel costs will tend to decrease in use of less cars as people won't spend much money for this. So, this will also decrease the air pollution and the emission of green house gases.
E. Creating car free zones will make the people to avoid the use of cars and thus, this will also prevent the emission of green house gases.
Hence, all the options except biking, will directly or indirectly reduce the contribution to green house gases.
So, the correct answer is 'Biking'.