A layer of impermeable material, such as clay, that prevents mixing of the ground water in the aquifers above and below it is called a ________ layer
A) blocking
B) confining
C) constraining
D) restraining
Answer: B
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Predict future migration trends in Canada
What will be an ideal response?
How does excess CO2 in the atmosphere cause more extreme flooding?
A. It warms the atmosphere and causes increased evaporation. B. It cools the atmosphere and causes decreased evaporation. C. It combines with rain droplets and makes them larger. D. It increases the acidity of the rain and while the amount of rain is the same, the acidity causes more erosion.
What manufacturing region in North America produces electronics and processed foods, and is often called "Silicon Valley"?
A) Gulf Coast, from southeastern Texas to Alabama B) Los Angeles and San Diego C) San Francisco Bay D) Southeastern, from Virginia through Alabama E) Pacific Northwest
What is a fetch?
a. The undulation of dispersed waves across the surface of the ocean b. The maximum wave size theoretically possible for a specific wind strength and duration c. The uninterrupted distance over which wind blows d. A progression of swells with the same origin