Why are lakes without outlets salty?
What will be an ideal response?
Answer: Salts are dissolved from the landscape and arrive in runoff water. More salts are dissolved from materials on the lake bottom. Evaporation concentrates the salts.
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Which of the following is one of the three major population concentrations mentioned in the chapter?
A) East Asia B) Central Asia C) Sub-Saharan Africa D) Australia
Hypothermia is most common in cold, dry weather. Indicate whether the statement is true or false
The agricultural industry in the Great Plains experienced the combination of drought and financial depression in the 1890s and again in the 1930s. This pattern is called what?
A) A dust-bowl economy. B) The economic cycle. C) A boom-bust economy. D) The forty-year cycle.
The Kuiper belt is the source for ________.
A. shooting stars B. long-period comets C. asteroids D. short-period comets