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The literal meaning of a blueprint is a paper — which is blue — with plans for a building printed on it. You can also call other guides or plans blueprints. The way you do your homework every night could provide a blueprint for your little sister's study habits. A business plan is a blueprint for a profitable business.
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Past perfect
Explanation:
If it started in the past, it has to be he past perfect
Trees are helpful perennial plants. They help combat climate change, clean the air, provide oxygen, cool the environment, and help prevent water pollution and soil erosion and a number of other benefits. Without trees, surviving life here on earth would be impossible. Trees absorb carbon dioxide and release oxygen back into the air. They can also absorb odors and harmful gases and pollutants in the air by trapping them on their leaves and bark. They provide oxygen and have the capacity to cool the environment by bringing shades and releasing water vapor through their leaves. They help prevent water pollution, too, since they prevent rainfall from carrying pollutants to the ocean and other bodies of water. In preventing soil erosion, they have the capability to hold soil in place.
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Image result for Which population was helped by the invasion of the zebra mussels?
In huge numbers, they out-compete other filter feeders, starving them. They adhere to all hard surfaces, including the shells of native mussels, turtles, and crustaceans. In the Midwest they have destroyed boat engines, fouled beaches, and caused damage to boat ramps and docks.
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Starring some of our country’s most celebrated actors, Sidney Poitier and Ruby Dee, this was one of the first films to get really real about how everyday racism affects black families just trying to get by in America. In this case, it’s a Chicago family who has come into some unexpected money and the obstructions they face when trying to, for example, move into a traditionally “white neighborhood.” The film’s story still resonates for many today, as evidenced by its series of sold out performances every time the play (on which the film is based) comes to Broadway.