A strong chemical bond in which electrons are shared rather than transferred or exchanged is a(n) ____. (HINT: An example is the bond in quartz.)
a. covalent bond
b. metallic bond
c. hydrogen bond
d. van der Waals bond
e. ionic bond
a
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One trend that is important in earthquake prediction shows that ____
a. ?major earthquakes along a fault tend to occur in groups separated by an inactive interval b. ?some faults have migrating earthquakes that start at the center of the fault and proceed in both directions at regular intervals c. ?many earthquakes have reliable recurrence intervals which accurately predict the decade of the next major earthquake d. ?earthquakes often occur simultaneously at many locations along a fault e. ?radon gas emissions and groundwater level are trustable indications that an earthquake is imminent
Carnivores can be distinguished from herbivores by ____
a. size, as carnivores are larger b. size, as herbivores are larger c. number of toes, as carnivores have an odd number of toes d. number of toes, as herbivores have an odd number of toes e. tooth shape
Which of the following normally would be TRUE of the humidity above the hot, moist, tropical rain forests of the world?
A) The saturation vapor pressure would be low. B) The specific humidity would be low. C) The relative humidity would be high.
Environmental impact would be greatest mining for ____ ore
a. a high-grade b. a moderate-grade c. a low-grade d. a plentiful e. a low- to moderate-grade