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English for Today
Unit One: Father of the Nation Bangabandhu's Family in 1971 The Tale of Homecoming Bangabandhu at the UN Bangabandhu's Relationship with other countries Unit Two: Pastimes Have You Any Favourite Pastime? Reading Really Helps Change in Pastime Change in Pastimes in Bangladesh Pastimes Vary Unit Three: Events and Festivals Mother's Day May Day International Mother Language Day - 1 International Mother Language Day - 2 Independence Day Pahela Baishakh Unit Four: Are We Aware? The Ferry Boat Are We Too Many? Our Food and Shelter The Story of Lipi Let's become skilled workforce Unit Five: Nature and Environment The Greed of the Mighty Rivers Environmental Pollution Man and Climate Putting Our Fish In Hot Water A Friend of The Earth Unit Six: Our Neighbors Nepal, The Land of Everest Sri Lanka: The Pearl of the Indian Ocean The Maldives India: Unity In Diversity Bhutan: The Land of Happiness Unit Seven: People Who Stand Out Zainul Abedin, The Great Artist The Art Of Silence The Beginning Love For Humanity Love For Humanity The wizard of Apple Job's Childhood Unit Eight: World Heritage The Shat Gambuj Mosque The Somapura Mahavihara The Statue of Liberty Lake Baikal Unit Nine: Unconventional Jobs Jobs That People Do Weired jobs Around Floral Career Unit Ten: Dreams Have a Dream What I Dream to be They Had Dreams (Part- 1) They Had Dreams (Part- 2) Unit Eleven: Renewable Energy Renewable Energy Sources (Part 1) Renewable Energy Sources (Part 2) Unit Twelve: Roots My Roots My Roots 2 The Return Of the Native In Search Of Identity Unit Thirteen: Media and Modes of E-communication Media and Modes Of E-Communication Social Network Sevices E- Learning Unit Fourteen: Pleasure and Purpose Books Two Mothers Remembered The Sands Of Dee Time, You Old Gipsy Man Stopping by Woods on a Snowy Evening The Purple Jar (Part -1) The Purple Jar (Part -2) The Purple Jar (Part -3) A Pond of Flesh The Three Caskets The Trial

Man and Climate

নবম-দশম শ্রেণি (দাখিল) - English for Today - Unit Five: Nature and Environment | | NCTB BOOK
8

A. Discuss the questions in pairs.

1. Can man influence the climate? If the answer is yes, explain how?
2. Which human activities are responsible for increasing carbon dioxide in the atmosphere?
3. How can trees help save our environment?

Now read the text below and find answers to the above questions.

Humans can neither change the sun's radiation nor the earth's orbit around the sun. But they can control the increase in the amount of greenhouse gases and its effect on the atmosphere. Only during the last hundred years the carbon dioxide concentration has been raised alarmingly in the atmosphere and we humans can be held responsible for this.

The main cause of the increase in carbon dioxide level in the atmosphere is the burning of fossil fuels. Since the end of the 19th century, industrial activities increased rapidly giving rise to many factories. These factories required energy, which was produced through the combustion of coal. Besides coal, other sources of energy such as mineral oil and natural gas were also burned to heat our houses, run cars and airplanes or to produce electricity. Nowadays, about 85 million barrels of crude oil are burned daily. Every time a fossil raw material is burned, it releases carbon dioxide into the air. Therefore, it is clear that more and more greenhouse gases like carbon dioxide are being generated worldwide by humans. Moreover, we are also strengthening the greenhouse effect by deforestation, which means cutting down trees. Every year enormous areas of forests are destroyed by people to obtain wood and to clear regions for mining and to create pasture. This loss of the forest causes dual problems. Trees that are burned up release large volumes of carbon dioxide gas into the air. On the other hand, as forests absorb a lot of carbon dioxide from the air and deliver oxygen instead, we also destroy an important storehouse of carbon dioxide when we clear forests.

 

B. Read the statements below and say if they are True/False. If false, give the correct information.
1. Fossil fuels are burned at an alarming rate due to industrialisation.
2. Coal is the only fuel used for generating energy.
3. At present, nearly 85 million barrels of crude oil are used weekly.
4. Deforestation is caused by nature.
5. Forests help consume carbon dioxide gases from the air.

 

C. Match the meanings in column B and the words/phrases in column A.

A B

1. Sun's radiation

2. Fossil fuels

3. Combustion of coals

4. Crude oil

5. Raw materials

6. Deforestation

7. Photosynthesis

a. energy that is transmitted from the sun in the form of rays or waves or particles
b. the process used by plants to convert light
energy captured from the sun to chemical
energy

c. a basic material or substance used in the production or manufacturing of goods

d. non-renewable sources of energy that come from the remains of plants and animals

e. intentional destructions or removal of trees and other vegetations for agricultural, commercial, housing or firewood use

f. a naturally occurring, unrefined petroleum product that can be refined to produce usable products such as diesel, gasoline, heating oil, jet fuel, kerosene, etc.

g. burning of coal usually in industrial plants.

 

D. Write a letter to the Editor of a newspaper expressing your concern about growing deforestation in your area. Describe how deforestation is changing your environment. Also suggest what actions could be taken to stop cutting down trees. Follow the clues below.

  • dangers caused by deforestation
  • increase of carbon dioxide in the atmosphere
  • the greenhouse effect
  • making people aware of the adverse effect of deforestation 
  • making an action plan to stop deforestation
Content added || updated By
Md Arafat ali

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