Earth is approximately 4.6 billion years old
a. True
b. False
True
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The Amharic language family is largely found in which contemporary sub-Saharan African nation?
A) Senegal
B) Ghana
C) Nigeria
D) Ethiopia
E) Madagascar
If a widow's peak hairline is dominant and a straight hairline is recessive, then
A. some of the children of two straight-hairline parents could have widow's peaks. B. some of the children of two widow-peaked parents will have straight hairlines. C. all the children of two widow-peaked parents will have widow's peaks. D. all the children of two straight-hairline parents will have straight hairlines.
Who determines which names and dates on the geologic time scale are "official"?
What will be an ideal response?
When the frequency of light matches the natural frequency of molecules in a material, light is
A) absorbed. B) transmitted. C) reflected. D) none of the above