Savethesharks拯救鲨鱼汇编.pptVIP

What can people do to save the sharks? = = a bowl of shark fin soup the life of a whole shark 2.What do you think of finning ? … cruel, … harmful … Why is it harmful? Sharks are at the top of the food chain in the ocean’s ecosystem. If their numbers drop too low, it will bring danger to all ocean life. Saving Sharks is saving ourselves! 3. How many sharks are caught and traded every year? 4. How much have the numbers of some kinds of sharks fallen in the last 20-30 years? Around 70 million sharks are caught and traded every year. The numbers of some kinds of sharks have fallen by over 90% in the last 20-30 years. Save the sharks! It is not only…, but also… to the … Without a fin, a shark can… swim and… Sharks are at the top of the … in the ocean’s …. If their numbers… too low, it will bring …to all ocean life. Around … million sharks are…and… every year. When people catch…, they…their fins and … the shark back into the... Proposing(提出) Analyzing(分析) Solving (解决) What do the environmental protection groups around the world do to fight against “ finning” ? 2. Have any scientific studies shown that shark fins are good for health? Read Para.3 and answer the questions. They are teaching the public about finning. They have even asked the governments to develop laws to stop the sale of shark fins. No. What’s the fact? 科学研究显示，鱼翅中胶原蛋白含量虽然很高，但缺少一种必需的氨基酸(色氨酸)，不容易被人体吸收。鱼翅的营养价值还不如牛奶，鸡蛋。 另外，鱼翅被汞等有毒重金属污染的程度高达70%。鲨鱼处在食物链顶端，因此它们体内积聚的有毒物质常常超出正常允许含量的数十倍。 = Why eat fins? Save the sharks! It is not only …, but also … to the … Without a fin, a shark can… swim and… Sharks are at the top of the … in the ocean’s …. If their numbers … too low, it will bring … to all ocean life. Around … million sharks are caught and… When people catch…, they … their fins and … the shark back into the... Proposing(提出) Analyzing(分析) Solving (解决) Environmental protection