1. ____ is a long period of dry weather when an area gets less than its normal amount of rain. ____ can last months or even years. Because plants need water to grow and land animals need water to live, droughts can be dangerous. 2. ____ happens when the air, water or land are dirtied by waste or chemicals. Most ____ comes from burning fossil fuels (coal, natural gas and oil). 3. The average temperature on Earth is slowly rising. This is known as ____. The warmer weather could harm living things. It also could cause polar ice caps to melt. This would cause sea levels to rise. Plants, animals, and buildings along coastlines would be in danger. 4. Forests are home to an enormous range of living things. ____ is the clearing, or cutting down, of forests. Because ____, many plants and animals are killed. 5. A ____ is a rise of water with no place to go. Flash floods are the deadliest kind of flood. They are caused by sudden heavy rainfall or a broken dam. They happen very quickly and can catch people before they have a chance to escape. 6. ____ or a tropical cyclone is a circular storm that forms over warm oceans. When a hurricane hits land, it brings heavy rains and strong winds. The winds can destroy buildings and rip out trees by their roots. People often give ____ people’s names, for example, Hurricane Larry or ____ 7. A wildland fire, or ____, is an uncontrolled fire that burns in a forest or grassland. In the United States and Australia, about 50,000–60,000 ____ (also known as bushfires in Australia) burn every year. About 90 percent ____ are started by people, These fires are started by campfires, cigarettes, or other careless behavior. The remaining 10 percent of wildfires are started by lightning or lava. 8. The global average sea level has risen over 17.78 cm in the past 100 years. A few centimeters may not seem like much, but every centimeter of sea level rise covers 2 metres of beach. If the ice keeps melting, global sea level could rise more than 6 meters. ____ would put a lot of coastlines under water. Whole islands could disappear! 9. Ice acts like a protective cover over the Earth and our oceans. Ice reflects extra heat back into space and keeps the planet cooler. When ____ our planet gets warm faster.

Environmental problems

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