A hypothesis for the origin of the solar system in which rings of matter were spun off a contracting solar nebula is the:
a. nebular hypothesis
b. collision hypothesis
c. protoplanet hypothesis
d. asteroid hypothesis
a
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Explain why as incomes rise we draw more from nature's ecological credit card, and what the suspected consequences are
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With every other condition being exactly the same, which one of the following scenarios is most likely to have a landslide?
a) A hill with a steep slope b) A hill with a gentle slope c) Flat farmland d) All of the above e) None of the above
The walls and floors of trenches lie in the ____________ zone. Fill in the blank(s) with the appropriate word(s)
A student named a particular compound 2-propyl-1-butene. Assuming that the student's choice actually corresponded to the correct distribution of the double bond and the substituents, what is the correct IUPAC name for this compound?
A) 2-propyl-1-butene B) 2-ethyl-1-pentene C) 3-methyl-2-pentene D) none of these