Answer: Basically, scientists study and predict the natural world, and engineers use that knowledge for practical purposes. Scientists observe the world, while engineers focus on creating. Both field require observation and analysis, though engineering deals with creating and working on already existing creations. Engineering is more specific than science.
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Waste water conversion to water that can be used for purposes other than drinking, is known as ‘waste water recycling’. In certain cases, where advanced technology is used, waste water is even converted to drinkable water, often referred to as ‘Toilet to Tap’ process.
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A preposition is a word or group of words used before a noun, pronoun, or noun phrase to show direction, time, place, location, spatial relationships, or to introduce an object. Some examples of prepositions are words like "in," "at," "on," "of," and "to."
Explanation:
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A comma is used to set an introductory apart.