________________ are circular surface depressions produced by groundwater dissolving limestone bedrock, usually at joint intersections
Fill in the blank(s) with correct word
Sinkholes (dolines)
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Which country had the highest total manufacturing value added output in 2011?
A) Japan B) United States C) Germany D) China
Evaluate which of the ecological disasters of the Soviet period have the most negative effects on Central Asia
What will be an ideal response?
What is NOT one of the three major ways of increasing the global food supply?
A) cultivating the oceans B) creating human-made soils in infertile areas C) developing high-protein cereal crops D) increasing the acceptability and palatability of inefficiently used present foods E) none of the above are reasonable ways of increasing the global food supply
We associate the concept of potential evapotranspiration with the Köppen climate classification system
Indicate whether the statement is true or false