A discount rate is the estimate of a resource's future economic value compared to its present value.
Answer the following statement true (T) or false (F)
True
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Dunes that form when vegetation cover is broken by deflation and the dune tips point upwind are:a
longitudinal. b. transverse. c. barchan. d. parabolic. e. none of the above
What is the most important aspect of future oil supplies?
A) when the supplies will be exhausted B) how much remains C) when oil production will peak D) how clean newly found oil reserves will be
The wet season of the tropical monsoon climate of SE Asia occurs during the season of ________ Sun due to the presence of the ________ over the continent. (low Sun = "winter" and high Sun = "summer")
A) low; ITCZ B) low; subtropical high C) low; Hadley cells D) high; subtropical high E) high; ITCZ
Passive solar technologies ________
A) use mirrors to concentrate the sun's rays on a tower or a series of pipes holding water B) use the energy of sunlight without relying on electrical or mechanical devices C) use silicon wafers to generate light energy D) use mechanical devices to heat water and buildings or electrical devices to generate electricity E) use photovoltaic cells to produce light energy