How old are fossils that indicate the first life forms on Earth?
A) Between 1.2 and 1.5 billion years old
B) Between 2.6 and 2.7 billion years old
C) Between 3.4 and 3.5 billion years old
D) Between 4 and 4.2 billion years old
C
Environmental & Atmospheric Sciences
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a. basalt b. feldspar c. obsidian d. magnetite e. calcite
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Predict the future development of Australia's Aborigines
What will be an ideal response?
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Objections to consumerism had ________ overtones
A) environmental B) social C) political D) cultural E) religious
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