Middle-range forecasting has a serious loss of accuracy after about

A) three days.
B) seven days.
C) 14 days.
D) 20 days.


Answer: B

Environmental & Atmospheric Sciences

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Which of the following is a point source of water pollution?

A. offshore oil well B. livestock feedlot C. urban land D. cropland E. logged forest

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Water's salinity can be increased by

A) entering freshwater streams. B) decreased rates of evaporation. C) ice freezing. D) ice melting.

Environmental & Atmospheric Sciences

Because of chaos theory, the longest theoretical time span for accurate forecasts is believed to be about

A) 2 weeks. B) 4 weeks. C) 2 months. D) 3 months. E) 4 months.

Environmental & Atmospheric Sciences

This wind-blown dust deposit (loess) from Tibet



A) was deposited by a huge flood of seawater that covered the land at the time of the dinosaurs.
B) began as clay and silt that were produced by grinding of rocks along ice-age glaciers.
C) forms a worldwide layer associated with a well-known extinction of dinosaurs.
D) All of these are correct.

Environmental & Atmospheric Sciences