2. BTLEW Lesson 11 – Silent Spring Part One ENTER

3. BTLEW Lesson 11 – Silent Spring Warm-up I.Discuss Issues on EnvironmentDiscuss Issues on Environment II.Sing a Song: Heal the World Sing a Song: Heal the World

4. BTLEW Lesson 11 – Silent Spring I. Discuss Issues On Environment For reference To be continued on the next page. 1. What do you know about environmental pollution? Pollution refers primarily to the fouling of air, water, and land by wastes. Thus litter, billboards, and auto junkyards are said to constitute visual pollution; noise excessive enough to cause psychological or physical damage is considered noise pollution; and waste heat that alters local climate or affects fish populations in rivers is designated thermal pollution. The 20th century has seen pollution approach crisis proportions throughout the world.

5. BTLEW Lesson 11 – Silent Spring For reference To be continued on the next page. 2. What environmental problems do we have nowadays? Air pollution Air pollution is contamination of the air by noxious gases and minute particles of solid and liquid matter in concentrations that endanger health. The major sources of air pollution are transportation engines, power and heat generation, industrial processes, and the burning of solid waste. I. Discuss Issues On Environment

6. BTLEW Lesson 11 – Silent Spring To be continued on the next page. Global warming Global warming is the gradual increase of the temperature of the earth's lower atmosphere as a result of the increase in greenhouse gases. Some longer-term results of global warming include melting of polar ice, with a resulting rise in sea level and coastal flooding; disruption of drinking water supplies dependent on snow melts; profound changes in agriculture due to climate change. Among factors that may be contributing to global warming are the burning of coal, petroleum products, and deforestation. I. Discuss Issues On Environment

7. BTLEW Lesson 11 – Silent Spring To be continued on the next page. Noise pollution Human created noise harmful to health or welfare. Transportation vehicles are the worst offenders, with aircraft, trucks, buses, automobiles, and motorcycles all producing excessive noise. Apart from hearing loss, noise can cause lack of sleep, irritability, heartburn, indigestion, high blood pressure, and possibly heart disease. Noise-induced stress creates severe tension in daily living and contributes to mental illness. I. Discuss Issues On Environment

8. BTLEW Lesson 11 – Silent Spring To be continued on the next page. 3. What do you know about chemical pesticides? Pesticides are substances which kill or deter unwanted pests, such as insects. Chemical pesticides are usually contact, stomach, or fumigant poisons. Contact poisons may have immediate or delayed effects after physical contact with a pest. I. Discuss Issues On Environment

9. BTLEW Lesson 11 – Silent Spring The end of this part. many consumers are concerned about the effects of pesticide residues in foods, especially for infants, whose systems may not be able to convert toxic chemicals into harmless substances as readily as adult systems can. In addition, concerns have been raised for farm workers in developing countries that lack the protective safeguards required in the United States; their health is threatened by the continued use of pesticides that are known health hazards. I. Discuss Issues On Environment

10. BTLEW There is a place in your heart And I know that it is love And this place could be much Brighter than tomorrow And if you really try You will find there is no need to cry In this place you will feel There is no hurt or sorrow There are ways to get there If you care enough for the living Lesson 11 – Silent Spring II. Sing a Song: Heal the World To be continued on the next page.

11. BTLEW Lesson 11 – Silent Spring To be continued on the next page. Make a little space Make a better place... Heal the world Make it a better place For you and for me And the entire human race There are people dying If you care enough for the living Make it a better place For you and for me II. Sing a Song: Heal the World

12. BTLEW Lesson 11 – Silent Spring If you want to know why There is love that can't lie Love is strong It only cares of joyful giving If we try we shall see In this bliss we can't feel Fear or dread We stop existing and start living Then it feels that always Love is enough for us growing To be continued on the next page. II. Sing a Song: Heal the World

13. BTLEW Lesson 11 – Silent Spring So make a better world Make a better place... Heal the world Make it a better place For you and for me And the entire human race There are people dying If you care enough for the living Make a better place for you and for me To be continued on the next page. II. Sing a Song: Heal the World

14. BTLEW Lesson 11 – Silent Spring And the dream we were conceived in Will reveal a joyful face And the world we once believed in Will shine again in grace Then why do we keep strangling life Wound this earth, crucify its soul Though it is plain to see This world is heavenly Be gods glow To be continued on the next page. II. Sing a Song: Heal the World

15. BTLEW Lesson 11 – Silent Spring We could fly so high Let our spirits never die In my heart I feel you are all my brothers Create a world with no fear Together we cry happy tears See the nations turn their swords into plowshares We could really get there If you cared enough for the living Make a little space To be continued on the next page. II. Sing a Song: Heal the World

16. BTLEW Lesson 11 – Silent Spring For you and for me And the entire human race There are people dying If you care enough for the living Make a better place for you and for me There are people dying If you care enough for the living Make a better place for you and for me You and for me... The end of Sing a Song. II. Sing a Song: Heal the World

17. BTLEW Part One This is the end of Part One. Please click HOME to visit other parts. HOME Lesson 11 – Silent Spring