What was "The Demographic Collapse" in Latin America?
A) the result of epidemics of diseases introduced by the Europeans
B) a decline already in progress when the Europeans arrived
C) the result of the high rates of internal migration after WW II
D) the transition from high growth to low growth through birth control
E) the result of civil wars prevalent during the 19th century
Answer: A
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Assume you are vacationing by a small lake, where you intend to do some fishing. When you arrive at this lake, you notice a slight sulfur smell. Which phase of cultural eutrophication does this sulfur smell indicate?
a. An algal bloom. b. Anaerobic bacteria are decomposing the aerobic organisms. c. Aerobic bacteria are decomposing the algae. d. Fish have died from lack of oxygen. e. Insect populations in the lake are dying off.
Explain how Darwin’s observations during his 5-year voyage on the Beagle led him to change
his mind about the fixity of species. What will be an ideal response?
Glaciers
A) grow when ice and snow accumulation exceeds melting. B) can, in some instances, move several meters per day. C) can trap bubbles of atmospheric gases. D) all of the above E) none of the above
Salt, dust particles, and smoke are all examples of:
A) condensation nuclei. B) freezing nuclei. C) anthropogenically-produced cloud nuclei. D) hydrophobic nuclei.