Listen to the passage and fill in the blanks with the exact words you hear. Let’s look at three of the most important problems. The first problem is __1___. Many people in the world can’t get enough water. But in some countries we use too much. A person in Gambia, Africa, for example, uses ___2___ water than someone in the United States. In Gambia, one person uses ___3___ liters of water a day. But in the US it’s 600 liters. And to make the problem worse, the ___4___ are getting bigger. The Sahara Desert is one of the hottest places in the world, and is already the largest desert. But each year it gets bigger than before, so it gets more___5____ to find clean water. Our second problem is the ___6___. There are more people on the earth than ever before. This means we use more space. And for the animals this means that there is ___7___ before. One example is the Amazon Rainforest. It has the highest number of plant and animal species in the world, but it’s ___8___ every year. People are destroying the rainforest to make more space for houses, roads and farms. In the last 10 years we have destroyed more than 150,000 square kilometers of forest – that’s an area larger than Greece! So in the future, many plants and ___9___ will become extinct. And the last problem on our list, but not the least important, is the weather. The world is getting warmer. The ice in Greenland is ___10___ faster than ever before. Also sea levels are rising. This means that soon some of the world’s most important cities, like New York, London, Bangkok, Sydney and Rio de Janeiro might all be under water.