Aquaculture ________
A) produces less fish per unit area compared to ocean water harvesting
B) frequently results in unintended catch of nontarget species
C) can bring economic benefits and food security to many developing regions
D) requires the flooding of fields to produce water-intensive crops such as cotton and rice
E) has no real environmental disadvantages
Answer: C
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When salt-forming ions are placed in water, they combine with each other and form solids.
Answer the following statement true (T) or false (F)
In many mountainous regions are found ________, which are characterized by large thrust faults stacked one upon another.
A. volcanic landforms B. patterns of deformation C. fold and thrust belts D. evidence of intrusions E. numerous rock types
The United States and Canada are prime examples of
A) authoritarian dictatorships B) parliamentary democracies C) federal states D) confederations E) unitary states
Several factors have affected the size and distribution of pastoral nomads in recent times. They are
A) nomadic societies have fallen due to the rise of territorial boundaries of states. B) governments have attempted to settle nomads. C) they have survived because they know how to use land that cannot be used for other economic purposes. D) all of the above. E) A and C only.