Which of the following is true of the distribution of land and water on Earth?
A) The Southern Hemisphere is dominated by water.
B) The Northern Hemisphere is dominated by water.
C) They are evenly distributed in both hemispheres.
A
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The most common use of bioremediation has been to assist in the cleanup of ________
A) PCBs B) heavy metal contamination sites C) herbicide and pesticide over-application D) non-biodegradable chemicals E) oil spills
The loss of a(n) ____ species can lead to population crashes and extinctions of other species in a community that depends on them for certain ecosystem services.
A. foundation B. indicator C. native D. keystone E. specialist
Swidden agriculture
A) works best in regions of medium to high population density. B) is most common on coastal plains. C) depletes soil nutrients within a few years. D) usually is associated with paddy rice production E) has benefited significantly from logging operations
The most populous city in the world is ____.
A. Mexico City B. Sao Paulo C. Tokyo-Yokohama D. New York City E. Mumbai