What forms a knickpoint?
A. a steep channel section over less resistant bedrock
B. less resistant bedrock underlying a turbulent flow
C. a gentle channel section over less resistant bedrock
D. more resistant bedrock underlying a gentle flow
E. a steep channel section over more resistant bedrock
E
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In his book Garden Cities of Tomorrow, Sir Ebenezer Howard proposed relocating excess urban population into new medium-sized garden cities
Indicate whether the statement is true or false.
The majority of water in the hydrosphere is found in which feature?
A) Rivers B) Oceans C) Water vapor D) Glaciers
Explain the difference between global warming and the greenhouse effect
What will be an ideal response?
The thinning of the ozone layer over the Antarctic always occurs at the end of the Antarctic winter because
A. ozone is consumed by melting ice as winter transitions to summer. B. the Antarctic experiences its highest level of radiation during its winter. C. during their winter, residents of the southern hemisphere use more CFCs. D. UV from the sun is necessary to the creation of ozone from oxygen and the Antarctic receives no UV from the sun during its winter.