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The Roman discovery of this building material helped in the construction of roads, bridges, aqueducts, and fortifications
Unsafe Levels
Concentrations or conditions of a substance or environmental factor that pose a risk to health, safety, or well-being.
Radioactivity
The spontaneous emission of radiation from the nucleus of an unstable atom as it changes to a more stable state.
Poisson Distribution
A probability distribution that measures the probability of a given number of events happening in a fixed interval of time or space.
Unsafe Levels
Conditions or thresholds that exceed the accepted or legal safety limits, posing risks to health or safety.
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