awesomeness778 awesomeness778

09-05-2017
Biology

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Who was the scientist who first proposed that all single-celled organisms should be put into their own kingdom?

Anton van Leeuwenhoek

Charles Darwin

Carolus Linnaeus

Ernst Haeckel

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lyssa86 lyssa86

09-05-2017

Ernst Haeckel (1866) created a third kingdom for all single-celled organisms.

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