The effect of ozone destruction is most severe ________.
A. at polar latitudes
B. at equatorial latitudes
C. at temperate latitudes
D. in terrestrial desert areas
E. All of these are equally affected.
Answer: A
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Which of the following factors makes a site near a volcano relatively more dangerous?
A. a site that is upwind from the volcano B. the nearby slopes on the volcano are gentle C. a site that is within a valley that drains the volcano D. All of these choices are correct. E. None of these choices are correct.
The establishment stage of forest development following disturbance can be described as ________
A) tree seedlings becoming established in the gaps in the forest B) tree seedlings germinating on the recently cleared ground C) trees becoming much larger and more widely spaced in the forest D) very large, old trees that are abundant E) large trees continuing to grow with the biomass of the forest increasing
The Obama administration has moved to combat urban sprawl through the
A) Clean Air Act. B) Clean Water Act. C) American Recovery and Reinvestment Act. D) ISTEA.
An object emits a range of electromagnetic energy wavelengths because
A) not all molecules vibrate at the same speed. B) relativity theory states that objects attain varying terminal velocities. C) lowest and highest vibration rates are cancelled. D) all molecules vibrate at the same rate.