Unit 1 Caring for Our earth LLead-in Language points l, power: supply energy be powered by由.提供动力 2 fossil fuel fuel such as coal, oil and natural gas,that was formed over millions of years from remains of animals or plants 3. ecology: branch ofbiology that deals with the habits of living things,esp. their relation to their environment生态学 4.disrupt: to make it difficult for sth. to continue in the normal way扰乱;打乱 ecological disruption生态混乱Unit 1 Caring for Our Earth Lead-in Language Points: 1.power: supply energy be powered by 由…提供动力 2.fossil fuel: fuel such as coal, oil and natural gas, that was formed over millions of years from remains of animals or plants 3.ecology: branch of biology that deals with the habits of living things, esp. their relation to their environment 生态学 4.disrupt：to make it difficult for sth. to continue in the normal way 扰乱；打乱 ecological disruption 生态混乱