Earth is approximately 4.6 billion years old

a. True
b. False


True

Environmental & Atmospheric Sciences

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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

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences

Who determines which names and dates on the geologic time scale are "official"?

What will be an ideal response?

Environmental & Atmospheric Sciences