The Greenhouse Effect Explanation, Summary, Questions and Answers

The chapter “The Greenhouse Effect” is an important part of WBCHSE English. Students often understand the idea but find it difficult to explain in exams. Here, you will get a clear explanation, short summary, and important questions and answers in easy English. This will help you understand the topic step by step. With this guide, you can revise quickly, write better answers, and score higher marks in your exam.

Content Structure

1. About the author – Carl Dennis
2. Theme of The Greenhouse Effect
3. Summary of The Greenhouse Effect
4. Word meanings
5. Exercises solutions
6. Additional Questions and Answers
- 6A. Multiple choice questions & answers (MCQs)
- 6B. Fill in the blanks
- 6C. True or False
- 6D. Short questions & answers
- 6E. Long questions & answers
7. Grammar
- 7A. Voice change

1. About the author – Carl Dennis

Carl Dennis is an American poet and educator born on 17th September 1939 in St. Louis, Missouri. He is known for his clear and thoughtful free-verse poetry which reflects on everyday life, human connections, and moral choices. He earned a bachelor’s degree from the University of Minnesota, followed by a Ph.D. in English Literature from the University of California. He works as a professor of English and creative writing at the State University of New York at Buffalo. In 2002 he won the Pulitzer Prize for Poetry for his well-known collection Practical Gods. Many people respect and find inspiration in his simplicity.

2. Theme of The Greenhouse Effect

The poem shows that as the Earth becomes warmer, the climate changes, which makes farming more difficult in many places, especially for poor people, who face many challenges in growing crops.
The poet imagines a future where many powerful countries lose their wealth and control, becoming poorer, while new powerful countries like Korea become richer and stronger.
The poem shows that people can live anywhere, work together, and enjoy simple joys even after huge changes in life, which highlights that life always goes on.

3. Summary of The Greenhouse Effect

Carl Dennis uses a calm and reflective tone in the poem to present a thoughtful image of the future shaped by climate change. He describes how global warming causes temperatures to rise in the northern and southern places near farming areas like the U.S. which become dry and struggle to grow crops. On the other hand, colder places such as Greenland and Antarctica become warmer and gain useful land for farming. The poem shows how poor people are the ones most affected, as good farming land becomes more expensive and daily life becomes more difficult. Suburbs are turned into farmland, forcing people to move into crowded cities where they walk or use carts. Streets are filled with vegetable and nut trees, and people grow food on their lawns. The government does not have enough money to repair public buildings like libraries and city halls, so people need to volunteer to fix them; otherwise, the buildings may fall down like ancient Roman temples. People face many difficulties in daily life, but they stay strong and find joy in simple things like music, friendships, and dancing. They avoid bad news from faraway places and choose instead to enjoy the present, and the poem ends by showing their strength, hope, and will to move forward.

4. Word meanings

Word	Meaning
Gradual	Slow
Grain	Seed
Poles	Ends of the earth
Abandoned	Left behind or not used anymore
Giant	Huge
Aid	Help
Tillable	Land that is good for farming
Suburbs	City edges
Farms	Croplands
Tax base	Tax money
Rake	Tool to gather leaves or smooth soil
Tuckpoint	Fix cracks in old brick walls
Fleets	Groups of ships
Merchandise	Goods for buying and selling
Armadas	Large groups of warships
Arctic	Cold area around the North Pole

5. Exercises solutions

1. What events will supposedly take place according to the poet in the poem ‘The Greenhouse Effect’? (6 marks)
Ans: The poet talks about global warming, which will change the weather and make farming areas that used to grow crops become dry and not suitable for farming. At the same time, cold places like Greenland and Antarctica may become fertile and useful for farming. The cost of farmland will rise, and people will have to move from suburbs back into crowded cities. Streets will have fruit and nut trees instead of shade trees, and people will grow food on their lawns. If people do not come forward to help, public buildings like libraries and city halls may not be repaired and could fall down. Still, people will continue to live their lives in new, simpler ways, finding joy in small things.

2. What does the poet mean by the words ‘Let them have their little time in the sun’? (2 marks)
Ans: The poet means that powerful countries may enjoy wealth and success for a short time, but this will change, and other countries will also become strong.

3. How will it affect the public? Mention any four events. (2 marks)
Ans: The poet shows that climate change will strongly affect the daily lives of ordinary people.

People will have to repair public buildings themselves.
Lawns will grow food, not just grass.
Farmland will become too costly for common people.
Nut trees and vegetable plants will replace decorative trees.

6. Additional Questions and Answers

6A. Multiple choice questions & answers (MCQs)

1. What kind of change is mentioned at the start of the poem?
(a) A cold snap
(b) A sudden flood
(c) A warming trend
(d) A rainstorm

Ans: (c) A warming trend

2. What will the Plains States become?
(a) Flood zones
(b) Green valleys
(c) Dust bowls
(d) Snowy fields

Ans: (c) Dust bowls

3. Which places will gain power due to climate change?
(a) Greenland and Antarctica
(b) India and Japan
(c) Brazil and Mexico
(d) USA and Russia

Ans: (a) Greenland and Antarctica

4. How will the speaker’s country compare to the new powers?
(a) Richer
(b) Stronger
(c) Weaker and poorer
(d) The same

Ans: (c) Weaker and poorer

5. How will people travel to work?
(a) On horses
(b) In private cars
(c) By walking or using trollies
(d) By flying

Ans: (c) By walking or using trollies

6. What will grow in place of shading trees?
(a) Grass
(b) Nut trees
(c) Apple trees
(d) Flowers

Ans: (b) Nut trees

7. What will people grow in their front yards?
(a) Grass
(b) Roses
(c) Vegetables
(d) Sand

Ans: (c) Vegetables

8. What must people do after work to help the city?
(a) Watch TV
(b) Donate money
(c) Do building repairs
(d) Sleep early

Ans: (c) Do building repairs

9. What past example does the poet mention?
(a) Rome
(b) Paris
(c) Delhi
(d) Cairo

Ans: (a) Rome

10. What animals grazed in the Roman Forum?
(a) Cows
(b) Horses
(c) Sheep
(d) Goats

Ans: (c) Sheep

11. How does the poet feel about losing power to new countries?
(a) Angry
(b) Proud
(c) Calm and accepting
(d) Confused

Ans: (c) Calm and accepting

12. What will those ships carry?
(a) Gold
(b) People
(c) Expensive goods
(d) Cheap goods

Ans: (d) Cheap goods

13. Where will people watch these ships from?
(a) Hills
(b) Beach
(c) Roofs
(d) Forests

Ans: (b) Beach

14. What will they ignore while listening to music?
(a) TV noise
(b) Animal sounds
(c) Arctic warnings
(d) School bells

Ans: (c) Arctic warnings

15. What feeling does the poet show at the end of the poem?
(a) Panic
(b) Hope
(c) Anger
(d) Confusion

Ans: (b) Hope

6B. Fill in the blanks

1. The poem begins by talking about a gradual __________ trend. (warming)
2. People will be __________ than they are now. (poorer)
3. There won’t be enough money to support __________ buildings. (public)
4. People will work after office hours to help maintain the __________. (city)
5. The poet talks about cleaning the lawn of the __________ and City Hall. (Library)
6. People will help repair the __________ of the Federal Building. (chimney)
7. Sheep once grazed in the __________ for a thousand years. (Forum)
8. Foreign ships will carry __________ goods. (cheaper)
9. People will live again in crowded ______________. (cities)
10. The __________ base will become too small to help public buildings. (tax)
11. The poem says stronger ___________ will take over. (Carthages)
12. The new powers will have large _____________ sailing around the world. (fleets)
13. They will start dancing to the music of the _______________ band. (beach)
14. Arctic warnings will be ignored while people enjoy the ______________. (radio)

6C. True or False

1. In the poem, the poet warns about the future of Earth. (True)
S/S: The poet warns us that global warming will damage the plains and affect life in the future.

2. The poet talks about the coastal flooding in the poem. (False)
S/S: The poet discusses global warming and climate change, not coastal flooding.

3. According to the poet, rich people suffered most from the change. (False)
S/S: The poet says poor people suffer the most from global warming because the land becomes too dry for farming.

4. Global warming makes the plains areas dry. (True)
S/S: Global warming mainly affects the plains, making them dry and unsuitable for crops.

5. People do not repair the private buildings. (False)
S/S: People repair public buildings like libraries and town halls after work, not private buildings.

6. People come into the cities by walking or trolley. (True)
S/S: After global warming, people return to the cities for work, often using trolleys or walking.

7. People start repairing the library after work to avoid crowds. (False)
S/S: People repair public buildings after work because the government cannot afford to hire workers, not to avoid crowds.

8. People always fight each other for their places. (False)
S/S: People live together peacefully and support one another during hard times.

9. People saw the ships from their house. (False)
S/S: People see the large ships from the beach, not from their houses.

10. The ships carry cheap goods. (True)
S/S: According to the poet, the ships bring cheaper and better goods from the new powerful countries.

11. According to the poet, after global warming, land became too expensive. (True)
S/S: The poet says land becomes too costly, so poor people cannot afford it for farming.

12. People have grown the vegetables in their lawns. (True)
S/S: People grow vegetables in their lawns after global warming to survive and meet their needs.

13. According to the poet, after global warming, the roads are lined with vegetable or fruit trees instead of shade trees. (True)
S/S: Roads are lined with useful trees like fruit or nut trees instead of shade trees like oaks and elms.

14. The poet mentions people are ignoring the Arctic warning when they listen to the music. (True)
S/S: People avoid harsh news from the Arctic and choose to enjoy music instead.

15. In the poem, the poet uses Arabic examples. (False)
S/S: The poet refers to examples from ancient Rome, not from Arabic history.

6D. Short questions & answers

1. What is meant by the “gradual warming trend” in the poem?
Ans: The gradual warming trend means that the earth’s temperature is slowly rising every day, which leads to changes in the climate and weather, making some areas hotter or drier, which makes farming harder, and life becomes more difficult for poor people.

2. Why will the grain belts begin to slide closer to the poles?
Ans: According to the poet, as the earth gets hotter, the central regions will face difficulties in farming, so the grain-growing areas, called the grain belts, will move toward the North and South Poles, where the climate will stay cooler and suitable for crops.

3. Why will Greenland and Antarctica become powerful in the future?
Ans: The poet says Greenland and Antarctica will become warmer in the future, so they will become suitable for farming, making them important and powerful like the present-day rich countries.

4. What does the poet say about getting aid from new powers?
Ans: The poet believes that older nations will remain poor, even if they beg or lie to get help from the new powerful countries, as climate change will slowly take away the power and wealth of present-day rich nations.

5. How will farming and living patterns change in suburbs and towns?
Ans: Land in suburbs will be used for farming, and many people will move back to towns because they can’t live far from their workplaces or services, especially those who can’t afford cars.

6. What kinds of trees and plants will be found on streets and lawns?
Ans: People will plant food-giving trees like nut trees beside streets in place of shedding trees like oaks and elms, and they will turn lawns into vegetable gardens, growing food wherever they can find space.

7. Why won’t public buildings be maintained well?
Ans: The government won’t collect enough tax money to maintain public buildings like libraries and town halls, as climate change and financial problems will make it difficult to repair or take care of these places, which may also lead to job losses.

8. What will people do to help public buildings?
Ans: People will use their free time after work to clean lawns, fix small parts of buildings, and do basic repairs since the government can’t afford workers, local people will take care of public buildings.

9. What might happen to the Federal Building?
Ans: The Federal Building might fall down if people don’t take care of it, as the poet compares it to Roman temples that broke down because they were ignored, showing that any big building can get damaged if it is not maintained.

10. Why does the poet mention sheep grazing in the squares?
Ans: The poet says that public places may become wild and empty if they are not maintained and the image of sheep grazing there, like in ancient Rome, shows that even big cities can break down without proper maintenance.

11. What does the poet mean by “stronger Carthages”?
Ans: “Stronger Carthages” means future powerful nations that will replace today’s strong countries like ancient Carthage; these new powers will be rich and important on the world stage.

12. How will older nations react to their loss of power?
Ans: The countries that lose their power will silently accept it, choosing not to fight or protest but to quietly enjoy simple things like listening to music.

13. What does the poet mean by “a little time in the sun”?
Ans: The phrase means that every country gets its moment of success and glory; just as older nations once enjoyed their time of power, the rising nations will have their own chance to shine.

14. Why do people sway to the strains of the native beach band?
Ans: People try to enjoy simple pleasures like music, even during hard times, and moving to the rhythm of the beach band shows their effort to stay happy in the middle of the difficult situations around them.

15. What is the poet’s attitude towards change?
Ans: The poet accepts that change is natural, and although climate change presents many challenges, he believes that people can survive by collaborating and adapting, with his calm tone reflecting hope for the future.

16. Why do people ignore the hits from the Arctic on the radio?
Ans: People ignore news about the Arctic and climate change because they don’t want to face those harsh truths so they focus on things that make them happy, like music, to avoid thinking about serious problems.

17. What kind of life does the poet imagine in the future?
Ans: The poet imagines a simpler but harder life, where people grow their own food, help take care of public places, and learn to live in new ways, showing that life will still go on but people will need to work together and adjust.

18. What warning does the poet give through the fall of Rome?
Ans: The poet warns that great civilizations can fall if they ignore important problems, like when Rome became weak and empty; modern countries could also fall down if they are not properly maintained.

19. Why is there a need for community work in the poem?
Ans: Community work is needed because the government does not have enough money to pay workers, so people must work together to keep public places clean and repaired, and helping each other becomes important to live well.

20. What is the overall message of the poem?
Ans: The poem warns about the effects of climate change, the loss of land, and shifting world powers; however, the poet believes that people can survive by supporting each other and making necessary changes together.

6E. Long questions & answers

1. What is the main effect of the gradual warming trend on farming areas?
Ans: The gradual warming trend is causing the Earth’s temperature to rise, making many farming areas too hot and dry for crops to grow. Farming will move to cooler places near the North and South Poles. The Plains States may turn into dry, dusty land that can no longer be farmed, forcing people to leave. Climate change will greatly affect farming and daily life, leading to big changes in the places people live and the way they live.

2. Why does the poet say Greenland and Antarctica will become powerful in the future?
Ans: The poet says that as temperatures rise, glaciers in Greenland and Antarctica will melt, making these places livable and suitable for farming, so people will move there to build homes and grow food. These regions will gain land, resources, and value, strengthening them globally. At the same time, current powerful countries may grow weaker due to environmental and economic problems caused by climate change. As a result, Greenland and Antarctica may rise as new world powers.

3. What changes does the poet imagine in public spaces and buildings?
Ans: The poet believes that due to a lack of government funds, public buildings like libraries and city halls will not be well maintained. People will be asked to volunteer their time to clean lawns and repair buildings. Streets won’t have shedding trees just for show; instead, nut-bearing trees will be planted, and lawns will be used to grow vegetables, showing that every available space will be used for practical needs during hard times. Just like in ancient Rome, where buildings fell due to neglect, this reminds us that people must work together to care for their surroundings.

4. Why does the poet compare future conditions with ancient Rome?
Ans: The poet compares the future with ancient Rome to show what can happen if we ignore climate change. He explains that public spaces and buildings might fall, like Roman temples. In ancient Rome, sheep once grazed in city squares, and this could happen again in modern cities if we don’t maintained. This comparison warns us that even strong societies can collapse without care, attention and reminds us to protect our land, people, and public places.

5. How will people contribute to keeping the cities alive and clean?
Ans: People will take responsibility for their neighborhoods by giving time after work to clean public areas and fix buildings. They will help maintain places like the Federal Building and City Hall. Sidewalks and lawns will be used to grow food, helping keep cities alive, showing how people must work together and share duties when money and resources are limited.

6. What changes in food habits and gardening does the poet suggest?
Ans: The poet suggests that people will stop growing flowers and grass only for looks, instead, they will plant useful crops like nuts and vegetables. Nut trees will replace decorative trees like oaks and elms, every land will be used for food production. The rising value of food will shift people’s focus from beauty to survival, leading them to change their eating habits and daily routines to adjust to the new environment.

7. What does the poet mean by “stronger Carthages” in the poem?
Ans: “Stronger Carthages” refers to future nations that will become wealthy and powerful due to climate change. The poet uses Carthage, an ancient empire, as a symbol of rising global powers. These new countries will offer better goods at lower prices and lead world trade, while current powers decline. The phrase shows how history repeats itself and how global power shifts from one group of nations to another.

8. Why do people ignore the news from the Arctic, according to the poet?
Ans: According to the poet, people ignore news from the Arctic and warnings about climate change because they are afraid of the truth. They prefer to focus on happy things, like music, to avoid stress. This behavior helps them feel better in the short term, but it also shows how people avoid facing serious problems, leaving them unprepared for the changes.

9. What is the overall mood or tone of the poet in this passage?
Ans: The poet’s tone is calm and thoughtful, which is reflective of the future. He points out serious issues like climate change, loss of power, and difficult living conditions, and he also expresses hope. He believes that if people work together and accept change, they can still live meaningful lives. His realistic outlook encourages readers to prepare for the future.

10. What is the central message of the poem “The Greenhouse Effect”?
Ans: The main message of the poem is that climate change will lead to major changes in the world, farmland use will shift, cities will grow, and powerful nations may lose power. People will need to grow their own food in new ways of living, and although the future may be difficult, it is not hopeless. The poet encourages people to accept change, protect the environment, and work together, reminding us that life will continue if we stay united and strong.

7. Grammar

7A. Voice change

A-P	The Plains States will abandon their cities.	The cities will be abandoned by the Plains States.
A-P	Greenland and Antarctica will join the new Great Powers.	The new Great Powers will be joined by Greenland and Antarctica.
A-P	We’ll rake the lawn of the Library each week.	The lawn of the Library will be raked by us each week.
A-P	We’ll watch the lights from Korean armadas.	The lights from Korean armadas will be watched by us.
A-P	We will plant vegetables in the front lawns.	Vegetables will be planted in the front lawns by us.
A-P	People will crowd on trollies.	Trollies will be crowded by people.
P-A	The tax base will be reduced by the government.	The government will reduce the tax base.
P-A	Ornamental trees will be replaced with practical nut trees by us.	We will replace ornamental trees with practical nut trees.
A-P	Far-flung fleets will load merchandise.	Merchandise will be loaded by far-flung fleets.
P-A	Many challenges will be faced by the country.	The country will face many challenges.
P-A	The cities will be rebuilt with effort by people.	People will rebuild the cities with effort.
A-P	The Korean fleets will patrol the oceans.	The oceans will be patrolled by the Korean fleets.
P-A	The old buildings will be restored with hard work by the citizens.	Citizens will restore the old buildings with hard work.
A-P	She is writing a letter.	A letter is being written by her.
A-P	The police caught the thief red-handed.	The thief was caught red-handed by the police.
P-A	The wall was painted red by them.	They painted the wall red.
P-A	The project will be completed by him tomorrow.	He will complete the project tomorrow.
A-P	The manager has approved your leave.	Your leave has been approved by the manager.
P-A	The traffic rules must be followed by us.	We must follow the traffic rules.
P-A	Trees are being planted in the garden by the students.	The students are planting trees in the garden.
P-A	Dinner was being cooked by her when I arrived.	She was cooking dinner when I arrived.
P-A	The room had been cleaned by them before we came.	They had cleaned the room before we came.
A-P	Somebody has stolen my bicycle.	My bicycle has been stolen by somebody.
P-A	The student was praised by the teacher for his honesty.	The teacher praised the student for his honesty.
P-A	I will send you the report by evening.	The report will be sent to you by evening.
A-P	We are watching a movie now.	A movie is being watched by us now.
P-A	The car was repaired by the mechanic.	The mechanic repaired the car.
A-P	Someone is cleaning the blackboard.	The blackboard is being cleaned by someone.
A-P	He posted the letter yesterday	The letter was posted by him yesterday.
P-A	A delicious meal has been prepared by the chef.	The chef has prepared a delicious meal.