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  Was the first to introduced the classification of oranisms by type and binomial definition and was the first to attempt to classify all the kinds of animals by similarities.
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  Began classifying plants on the basis of the structure of their fruits and seeds
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  Led to the discovery of cells and the realisation that organisms should be categorised according to similar cells
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  Described six thousand species and gave them names based on their "natural affinities," grouping them into genus and species.
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  Became the first person to divide flowering plants into monocots and dicots.
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  Introduced the taxon of 'order'
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  Introduced the taxons of 'class' and 'species'
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  Created the overall framework of classification that organized all plants and animals from the level of kingdoms all the way down to specids.
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  This enabled the study and observation of living organisms without destroying them and allowing their characteristics, movements and structure to be observed.
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  Created 3 Kingdom Classification system consisting of Animalia, Plantae and Protista.
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  This uses the rate of decay of Carbon to estimate the age of young fossils.
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  The DNA is used to identify differences and similarities between organisms and therefore classify the species on similarities of cells rather then basic structure.
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  Discovered a separate multi-cellular Eukaryotic kingdom.
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  Created 5 kingdoms classification system: Animalia, Plantae, Fungi, Prostista and Monera.
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  Created 3 domain classification system: Bacteria, Archaea and Eukaryota.