மாற்று சான்றிதழ் வேண்டி பள்ளி முதல்வருக்கு கடிதம் எழுதுக:
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Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. ... In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.
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