Water temperature drops rapidly between the euphotic zone and the abyssal zone of the ocean. This phenomenon is called the
a. Thermocline
b. Thermosphere
c. temperature flattening
d. continental shelf decline
e. Hydrocline
A
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A stream tributary may erode headward to capture another stream system because:
a. it has a steep gradient b. its channel is cut into nonresistant material c. it has a concave longitudinal profile d. both a and b
Which of the following combinations make for the best groundwater reservoir?
A) Low permeability and low porosity B) Low permeability and high porosity C) High permeability and low porosity D) High permeability and high porosity
In what year was the Environmental Protection Agency first established?
A. 1970 B. 1945 C. 1810 D. 1933
Drainage divides control into which basin surface runoff drains
Indicate whether the statement is true or false