Why is crushed limestone used in the remediation of sulfide waste rock?

a. The limestone forms a highly impermeable barrier.
b. The limestone neutralizes the acid that forms.
c. The limestone converts to marble and can be sold.
d. Native grasses and plants grow directly out of the limestone.
e. The sulfide waste rock will oxidize into limestone.


B

Environmental & Atmospheric Sciences

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Figure 26.6 Death Valley Topographic Map: from the 1000? contour line in Trail Canyon on the west side of Death Valley to the 200? contour line on the east side of Death Valley.

Use the following topographic maps and a ruler (inches or cm) to measure the map distance between the points indicated. Noting the RF scales posted on each map, calculate the approximate ground distance (miles or kilometers). Keep in mind that there are 63,360 inches in a mile: 12 in./ft * 5280 ft/ mile. Compare results with the graphic scale. What will be an ideal response?

Environmental & Atmospheric Sciences

What evidence would lead geologists to conclude that granite underlying sedimentary rock is older than the sedimentary rock?

A) contact metamorphism between the granite and the deepest sedimentary bedding B) fragments of the sedimentary rock included in the granite C) completely horizontal bedding of the sedimentary rock D) pebbles of the granite included in the bedding of the sedimentary rock

Environmental & Atmospheric Sciences

Statutory laws are passed by ________

A) federal preemption B) the president of the United States C) the legislative branch D) voters E) CEOs

Environmental & Atmospheric Sciences

The hydrologic cycle is not balanced right now and, as a result, sea level is rising

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences