Download Alien Digest 3 by Creston PDF

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Bitumen: A very thick, sticky form of crude oil that is found in the oil sands of Alberta, Canada, among other places. ethanol: A fuel that can replace gasoline and is made from crops like corn and sugarcane. black lung disease: A breathing disorder caused when coal dust gets in a miner’s lungs. carbon dioxide: A gas formed when fossil fuels are burned; also written as CO2. climate: The weather and overall conditions in a place as measured over a long period of time. greenhouse gases: Gases that trap heat from the Sun within the atmosphere; carbon dioxide is one of the most common.

They can help conserve fossil fuels. They can help your family save money. They can help protect our planet. 43 GLOSSARY acid rain: Rain, snow, fog, or embargo: A government order mist that contains acid substances restricting or prohibiting trade and and damages the environment. other types of commerce with a specific country. atmosphere: The envelope of air that surrounds the planet. eternal: Lasting forever. bitumen: A very thick, sticky form of crude oil that is found in the oil sands of Alberta, Canada, among other places.

Some types of coal mining can harm the environment. For example, when coal is close to the surface, a type of mining called strip mining may be done. In strip mining, trees are cut 31 COAL, OIL, AND NATURAL GAS ? Pirates! D ou K n o w Y id Every day, about 4 percent of the world’s oil passes through a body of water called the Gulf of Aden. On one side of the gulf is Somalia, which is a country in east Africa. The government there has broken down, and pirates are a major threat. In November 2008, pirates took command of a supertanker, the Sirius Star.

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