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Which of these is the correct unit for measuring human radioactive exposure?
Ke$ha
A pop singer and songwriter known for her distinct music style and hits such as "TiK ToK" and "We R Who We R".
Theory of Relativity
A fundamental principle in physics, established by Albert Einstein, which describes the relationship between space, time, and gravity.
Subject
In grammar, the part of a sentence or clause that performs the action of the verb or is described by the verb; in philosophy, the thinking or perceiving entity as opposed to the object of thought.
Subject
Represents the entity or topic that is being discussed, analyzed, or used as the focus of a sentence, study, or research.
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