What is the primary advantage of hydraulic mining, and what are its drawbacks? What will be an ideal response?
The advantage is that it is efficient. The drawbacks fall under the heading of destruction of the land.
Hydraulic mining increases downstream flooding, clogs irrigation systems, and ruins farmland. In
addition, there are negative impacts to the biosphere, such as mercury contamination from gold
extraction operations and destruction of spawning grounds for various fish species
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A piece of gravel in a stream is least likely to experience which motion?
A) sliding along the floor B) bouncing along the floor C) whirling in an eddy D) rolling along the floor
What foreign language have you studied? Have you used it in a foreign country?
What will be an ideal response?
If you could line up atoms of lead-208, approximately how many atoms would you need to line up in order for them to form a line 1 inch long?
A) 82 B) 208 C) 8.2 x 107 D) 1.6 x 1012
Humans fit into the food pyramid as ________
A) primary consumers B) primary producers C) secondary producers D) herbivores E) the apex of the pyramid