Primary sewage treatment involves
A. Removing solids from water
B. Making water usable for agriculture
C. Making water transparent again
D. Removing all organic matter from water
E. Removing all bacteria
Answer: A
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According to some critics, why doesn't an emphasis on improving energy efficiency succeed in reducing energy consumption?
A. Some people quickly switch back to less efficient products. B. Early efficiency improvements are reversed, resulting in a net decrease in efficiency. C. Energy-efficient products become too expensive because of demand. D. People tire of hearing about efficiency. E. Some people tend to use more energy when they buy energy-efficient devices.
A system wherein peasants farm small plots of land for their own subsistence is referred to as
A) minifundia. B) ejidos. C) latifundia. D) plantations. E) encomienda.
________ forms as a chemical weathering product of iron-rich minerals.
A. Limonite B. Quartz C. Hematite D. Both hematite and limonite are correct. E. All of the choices are correct.
The diameter of deep-water wave orbits decrease with depth.
Answer the following statement true (T) or false (F)