What impact do price controls on food crops have in the developing world?
A) They eliminate elite ownership of the land.
B) They cause degradation of land, especially in the tropics.
C) They cause developed world countries to stop sending food to hungry countries.
D) They free up credit (loans) from the developed world.
E) They create disincentives to produce for farmers.
E
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Branching channels that cross a delta are known as _____.
a - graded streams b - 3rd order streams c - youthful streams d - tributaries e - distributaries
In Maryland, soil preservationists produced a new composite map by combining in their GIS
A) soil quality, environmental, and economic maps. B) maps on soil quality and proximity to market. C) dry harvest climate, wet harvest climate, climate change, and soil maps. D) maps on habitat for endangered species. E) soil quality, environmental, and political maps.
When phosphoric acid, H3PO4(aq) , reacts with solid magnesium hydroxide, Mg(OH)2(s), the products are aqueous magnesium phosphate and water. Which of the following is the balanced equation for this reaction?
A) H3PO4(aq) + Mg(OH)2(s) ? MgPO4(aq) + H2O(l) B) 2 H3PO4(aq) + Mg(OH)2(s) ? Mg(PO4)2(aq) + 2 H2O(l) C) 3 H3PO4(aq) + 2 Mg(OH)2(s) ? Mg2(PO4)3(aq) + 2 H2O(l) D) 2 H3PO4(aq) + 3 Mg(OH)2(s) ? Mg3(PO4)2(aq) + 6 H2O(l)
What technology made suburbs possible?
A) automobiles B) highways C) telephones D) electrical energy E) all of the above