Which of the following groups contains the largest number of animals?
A. arthropods
B. mammals
C. fish
D. reptiles
A. arthropods
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Discuss differences in the exchange systems that characterized later prehispanic polities in Middle and South America.
What will be an ideal response?
The diversification of the mammals occurred mostly during the
a. Pleistocene b. Mesozoic c. Quaternary d. Cenozoic e. Paleozoic
Ardipithecus ramidus and Ardipithecus kadabba have defied expectations about early hominins because __________
a. both lived in densely forested environments b. each show evidence of a highly developed bipedal physiology c. both are far larger than typical Miocene primates d. neither shows evidence for increased cranial capacity
Why is global warming expected to be more harmful to poorer nations than wealthier ones?
What will be an ideal response?