1. Burning of fossil fuel 2. Deforestation 3. Sea level is rising and some animals are already moving to new homes
4. There are more storms and floods 5. Stop wasting energy
1和2处要求填写全球变暖的原因。第二自然段介绍了导致全球变暖的两个原因。the burning of fossil fuels (化石燃料) like oil and coal cause greenhouse gases to escape (释放) into the air and that these gases are causing most of the warming. Another cause is deforestation ( cutting down trees ) .所以1处填写the burning of fossil fuels；2处填写deforestation。
3和4处要求填写全球变暖产生的可能后果。第三自然段介绍了由于全球变暖已经发生的变化，Sea level is rising and some animals are already moving to new homes.所以，3处的答案就很明了了。第四自然段介绍了气候继续变暖的可能后果，其中本段第二句提到There may be more storms and floods.题干当中没有涉及，故4处应该填入此内容。
5处要求填写应对全球变暖，需要做什么。倒数第二自然段提到：For example, everyone agrees that wasting energy is a bad thing to do. 所以，我们不应浪费能源，故5处可填写Stop wasting energy。