The hyoid bone of the three year old fossil specimen from Dikika (Ethiopia) suggests that this species probably could not:
A. Speak like a modern human
B. East tough - fibrous food
C. Climb trees very effectively
D. Speak modern human
Answer is D. Speak modern human ( Australopithecus afarensis found with a fossilized hyoid bone anchors throat muscles, used in speech; earliest dating hominin hyoid bone ever found.)
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Radiocarbon dating cannot reliably date anything older than about
a. 25,000 years. b. 45,000 years. c. 125,000 years. d. 245,000 years. e. 55,000 years.
In order to intensify production, agriculturalists frequently build irrigation canals and terraces.
Answer the following statement true (T) or false (F)
Mutations may result from:
A. radiation B. certain chemicals and drugs C. some viruses
What is continental drift?
a. slow, gradual migration of the earth's surface due to the earth's rotation b. movement of the continents due to catastrophic events c. movement of the earth's surface over time due to magnetic north d. movement of the earth's surface over time due to plate tectonics