ent Spring Part One Warm-up W B T LE ENTER
W B T L E Lesson 11 – Silent Spring Part One ENTER
ent Spring Warm-up Contents I. Discuss Issues on Environment II. Sing a Song: Heal the World W B T LE
W B T L E Lesson 11 – Silent Spring Warm-up I. Discuss Issues on Environment II.Sing a Song: Heal the World
ent Spring I. iscuss Issues On Environment 1. What do you know about environmental pollution? Pollution refers primarily to the fouling of air, water For reference 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 W B T LE To be continued on the next page
W B T L E 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
ent Spring I. iscuss Issues On Environment 2. What environmental problems do we have nowadays? For reference 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 W B T LE To be continued on the next page
W B T L E 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
ent Spring I. iscuss Issues On Environment 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 W B T LE To be continued on the next page
W B T L E 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