Friction of distance means that
A. roads are rough
B. rubbing items together generates heat
C. there is less contact between places if the journey is long or travel is difficult
D. people who live far apart argue a lot
C. there is less contact between places if the journey is long or travel is difficult
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The tipping point in a neighborhood ________.
A. is the point in time in which the original charter group begins to confront the minority ethnic group in the neighborhood B. is an internal control as it assures the support of its residents and acts as a point of entry in the migration chain C. is an external control used by the charter group to guarantee its superiority D. is when the charter group leaves the neighborhood and relinquishes the area to the one-time minority group
Earth emits radiation with greatest intensity at ____ wavelengths
A) infrared B) radio C) visible D) ultraviolet
Given that the reaction N2(g) + 2 O2(g) ? 2 NO2(g) is endothermic, which of the following is true of the reaction 2 NO2(g) ? 2 N2(g) + 2 O2(g)?
A) Its activation energy is lower than that of N2(g) + 2 O2(g) ? 2 NO2(g). B) Its activation energy is the same as that of N2(g) + 2 O2(g) ? 2 NO2(g). C) Its activation energy is higher than that of N2(g) + 2 O2(g) ? 2 NO2(g). D) There is no relationship between its activation energy and that of N2(g) + 2 O2(g) ? 2 NO2(g).
The mouth of a river is where the river reaches base level
Indicate whether the statement is true or false