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René Descartes in the 17th century invented his cartesian coordinate system of positive and negative numbers with zero at it's center. This combined algebra and geometry and led the way to calculus and a complete acceptance of the decimal number system in the western world. 24 Other Scientific Contributions of India
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fauna is a group of indigenous animals of any geographical region. So, the term flora and fauna was coined by biologists to refer to a collection of plant and animal specifies in a given geographic location. This is why you hear phrases like flora and fauna of India, flora, and fauna of Indonesia and so on.
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