By the close of the Paleozoic, all the continents had fused into the single super continent of ________
A) Europa
B) Gondwanaland
C) Pangaea
D) Laurasia
E) Appalachia
C
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People of different nations can be citizens of the same state, but citizens of different states cannot be of the same nation
Indicate whether this statement is true or false
Organizations like OPEC have formed ________
A) in order to take maximum advantage of developed nations dependence on imported oil B) to ensure that developing nations get their fair share of fossil fuels C) to protect their national members' petroleum reserves for their own use D) to develop technologies to conserve non-renewable energy resources E) as a military alliance to protect developed nations' energy reserves
Which of the following activates the receptor sites for acetylcholine?
A) curare B) nicotine C) opiates D) none of these
Soil peds give the soil a particular structure and are aggregates of individual mineral particles
True False Indicate whether the statement is true or false