Unit 3 Environmental Protection Reading and Thinking 课件-2022-2023学年高中英语人教版（2019）选择性必修第三册

Unit 3 Environmental Protection Reading and Thinking Earth provides enough to satisfy every man's needs, but not every man's greed. 地球所提供的物质财富足以满足每个人的需求，却不足以满足每个人的贪欲。 ---Mohandas K. Gandhi ---印度国父甘地 Climate Change Requires the World`s Attention 气候变化需要全世界的关注 We have known about climate change for decades. There is little doubt that Earth is getting warmer and warmer (see the graph). A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate. 我们了解气候变化已有数十年之久了。毫无疑问，地球正变得越来越温暖（如图）。海洋和大气变暖，以及冰层融化、海平面上升，都为全球气候急剧变化提供了依据。 There is little/no doubt that... 毫无疑问... along with 与...一起 3 In 2013, a lot of people were shocked by a news photo of a dead polar bear that was found on Norway's Arctic island of Svalbard. According to the scientists who found its dead body, all that remained of the polar bear was "skin and bones". An expert who has studied polar bears for many years said that from the position of its dead body, the bear appeared to have starved and died. 2013年，在挪威的北极圈斯瓦尔巴群岛的一个岛上，（人们）发现了一只死亡的北极熊，这张新闻图片令许多人感到震惊。据发现北极熊尸体的科学家说，这只北极熊仅剩"皮包骨"。一位长期研究北极熊的专家说，从尸体的姿势看，这只北极熊像是饿死的。 appear to 似乎，好像 4 Experts claimed that low sea-ice levels caused by climate change meant the bear could not hunt seals as before, so it had to travel greater distances in order to find food. This alarming case showed how the increase in temperature had an impact on Earth's ecology . 专家称，气候变化导致的海冰面降低意味着北极熊无法像以前那样捕食海豹，于是它只能长途跋涉去寻找食物。这一令人惊恐的案例反映了气温上升对地球生态造成的影响。 have an impact on... 对...有影响 5 Then what is causing the increase in the global average surface temperature? Climate scientists often mention a key climate process called the "greenhouse effect", which has two common meanings: the "natural" greenhouse effect and the "man-made" greenhouse effect. The "natural"greenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms