Contamination of groundwater by nitrate is associated with:
a. animal feedlots
b. crop fertilization
c. septic systems
d. all of the above
d
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Are the chemical reactions that take place in a disposable battery exothermic or endothermic? Is the reaction going on in a rechargeable battery while it is recharging exothermic or endothermic?
A. Endothermic and exothermic, respectively. B. Both exothermic. C. Both endothermic. D. Exothermic and endothermic, respectively.
The overall impact of farm subsidies on a worldwide scale is to increase food surpluses in the rich countries and to discourage food production in the poor countries
Indicate whether the statement is true or false.
The Thornthwaite system of climate analysis is most successfully applied in:
a. northwestern Europe. b. central China. c. eastern and Midwestern United States. d. central and western Russia.
Eddies are found at all depths of the oceans.
Answer the following statement true (T) or false (F)