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Evaluate or simplify the expression without using a calculator.
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Dangerous Materials
Substances that pose risks to health, safety, property, or the environment due to their chemical, physical, or biological characteristics, necessitating careful handling and transport.
Added Responsibility
Additional duties or tasks assigned to an individual or team beyond their current role.
Basic Elements
Fundamental components or aspects that form the essential foundation or structure of a system, concept, or subject.
Manual Work
Labor performed by human workers using physical efforts, as opposed to tasks performed by machines or automation.
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