1、理解 课文精研读UNIT 1 Nature in the balance role eight With length plant an Animals significant into due to This tall and ancient brazil nut tree produces nuts that we can eat；these water lilies are big enough to lie down on.This jaguar is one example.While a significant number of jaguars survive here，they
2、 are only one elements of this forests food chain.The Amazon rainforest breathes life into the planet by fixing carbon and producing over 20 per cent of all the Earths oxygen.Moreover，the Amazon rainforest is a treasure house of species that can be used for food or medicine.Over the past 50 years，about 17 per cent of the rainforest has disappeared due to human activities such as agriculture and cattle farming.谢谢观看 THANK YOU!
