A presence of 'pond scum of algae' represents

A) decaying water body due to higher salinity.
B) excessive aquatic plant production due to farm fertilizer run off.
C) effluents from the factories killing plant life.
D) evaporation.
E) reduced water supply.


Answer: B

Environmental & Atmospheric Sciences

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A. three laws of motion. B. law of gravity. C. law of inertia. D. none of the above

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The highest peak in the lower 48 states is located where?

A) The Sierra Nevadas B) The Rocky Mountains C) The Cascade Range D) The Tehachapi Mountains

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North Korea's major rice producing area lies in the:

A) northeast B) northwest C) southeast D) southwest

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