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The Oxford Dictionary of Current English.
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The need for light and warmth created by fire, also a more convenient way of starting a fire and something that is portable.
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An intervention is a combination of program elements or strategies designed to produce behavior changes or improve health status among individuals or an entire population. Interventions may include educational programs, new or stronger policies, improvements in the environment, or a health promotion campaign.
One benefit is that it can help you take notes and study