Which of the following is a common setting for a spring?

A. a permeable upper layer with a water table deep below the surface
B. a limestone aquifer that intersects the surface
C. an unconfined aquifer with a water table deep below the surface
D. a nonpermeable upper layer with a water table deep below the surface


Answer: B

Environmental & Atmospheric Sciences

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The average summer temperatures in the Southern Hemisphere are cooler than the average summer temperatures in the Northern Hemisphere because ____

A) Earth is closer to the sun in January B) Earth is farther from the sun in July C) over 80% of the Southern Hemisphere is covered with water D) the sun's energy is less intense in the Southern Hemisphere

Environmental & Atmospheric Sciences

What is the service sector that includes the armed forces, public servants, and public service providers?

A) transportation and communications B) wholesale and retail trade C) consumer services D) producer services E) government

Environmental & Atmospheric Sciences

What special tool do tunicates use to obtain more food when suspension feeding?

a. Tunic outer covering b. Mucous plankton net c. Water vascular system d. Notochord

Environmental & Atmospheric Sciences

Water _________ threatens aquatic life and has caused entire ecosystems to collapse.

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences