describe about the subject science
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The nanometre or nanometer is a unit of length in the metric system, equal to one billionth of a metre. One nanometre can be expressed in scientific notation as 1×10⁻⁹ m, and as 1/1000000000 metres.
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Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. ... Evidence. Experiment and/or observation as benchmarks for testing hypotheses.
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