One of the environmental problems with gold mining is the leach ponds that contain ____________________
Fill in the blanks with correct word
cyanide
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What is the leading source of renewable energy worldwide?
A. hydropower B. geothermal energy C. solar-cells D. biomass E. biodiesel
What does a profile of a river from its headwaters to its mouth typically show?
A) An increase in gradient downstream B) A straight-line profile reflecting a constant decrease in gradient C) An abrupt increase followed by a gradual decrease D) A curved shape that flattens out downstream E) None of these are correct.
The Norwegian Vikings began looking westward after French, Irish, and British strengthened their
defenses against their raids Indicate whether the statement is true or false.
About how often does a natural stream overflow its banks?
What will be an ideal response?