Of the following sequences, which one reflects the best scientific knowledge about the succession of Homo species from the past until the present?
A. Homo sapiens ? Homo heidelbergensis ? Homo habilis ? Homo erectus
B. Homo heidelbergensis ? Homo habilis ? Homo sapiens ? Homo erectus
C. Homo heidelbergensis ? Homo sapiens ? Homo erectus ? Homo habilis
D. Homo habilis ? Homo erectus ? Homo heidelbergensis ? Homo sapiens
E. Homo habilis ? Homo heidelbergensis ? Homo erectus ? Homo sapiens
Answer: D
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Which one of the following is a CORRECT statement regarding metabolism?
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Taxonomists tend to use the ____ to characterize species for classification
a. morphological species concept b. biological species concept c. evolutionary species concept d. ecological species principle e. genetic species principle