What is the number of species scientists have named and described?
1.5 million
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What are the groups that have hair?
Marsupials, monotremes, and placental mammals
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The system Linnaeus developed that placed organisms in particular groups?
Binomial nomenclature
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What is the system biologist use to study the diversity of life?
Classification
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What is taxonomy?
Classifying and naming organisms
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What is the first level of classification?
Domain
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Who was the Greek philosopher that first classified organisms over 2,000 years ago?
Aristotle
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What were the three groups Aristotle divided plants into?
Herbs,shrubs,and trees
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Who developed the system of classification we still use today?
Carolus Linnaeus
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What two groups did Aristotle put organisms into?
Plant and animal
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What how many levels of classification are there?
8 levels
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What three groups did Aristotle put animals into?
Land dwellers, water dwellers, and air dwellers
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