Unit 6 Nurturing Nature Developing ideas 课件-2023-2024学年高中英语外研版（2019）选择性必修第一册

B4U6 Developing ideas Leading in Watch the video and answer the questions. 1 Which natural heritage site is introduced? 2 What kind of threat is it facing? Activity 1 Australia’s Great Barrier Reef Leading in 1 Which natural heritage site is introduced? Australia’s Great Barrier Reef. 2 What kind of threat is it facing? The reef is mainly threatened by human activities. Industry along the coast pollutes its waters; illegal fishing is reducing the number of fish; climate change caused by human activities leads to rising temperatures, which bleach the coral. Climate change also makes the water more acidic, causing coral grow more slowly. Activity 1 |bli:tʃ| to make sth white or pale by a chemical process 5 Saving the Reef With so much to see in the crystal-clear ________ of Australia's Great Barrier Reef, it's no wonder that millions of people visit it every year. ___________ tourism, it is a major site for fishing, research and shipping. Yet more than half of the reef's coral has been lost since 1985, and human activity _________. Industry along the coast pollutes its waters, ______ illegal fishing is reducing the number of fish. But the biggest threat may be climate change caused by human activities. ______ water temperatures ______ the coral, not only ______ it to lose its rainbow colours, but _____ the algae it needs to survive. Climate change is also making the water more acidic, causing coral to grow more slowly. Fortunately, long-term plans are now ________ to try to combat the effects of climate change. The reef became a UNESCO World Heritage Site in 1981, and today is carefully ________. Areas of the reef where living things ________ are now protected, and measures ____________ to stop tourists and fishing boats damaging the reef further. The islands around the reef are also protected from fire and pests. Through actions such as these, it is hoped that the Great Barrier Reef ___________ for future generations. With so much to see in the crystal-clea