The Aboriginal population constitutes roughly what percentage of the population of contemporary Australia?
A) 1%
B) 13%
C) 70%
D) 33%
E) 3%
E) 3%
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How do both weathering and erosion work together to produce significant landforms such as broad valleys?
What will be an ideal response?
The average heat flow of the continents is the same as the average heat flow of the sea floor.
Answer the following statement true (T) or false (F)
Over time, dissolved magnesium concentration in a lake has reached equilibrium. Input is from streams draining into the lake; magnesium is removed by precipitation in lake sediments. If wastewater discharge upstream doubles the rate at which magnesium is delivered to the lake,
A. the BOD of the lake will be cut in half. B. the BOD of the lake will double. C. the residence time of magnesium in the lake will double. D. the residence time of magnesium in the lake will be halved.
The most effective agent of erosion in the deserts is ____________________
Fill in the blank(s) with correct word