The porosity and permeability of a soil are influenced by the ____ of the soil
a. color
b. acidity
c. structure
d. copper content
e. fertility
c
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The term ____________ refers to a market exchange that affects a third party who is outside or external to the exchange.
A. social costs B. spillover C. market failure D. private costs
Which of these renewable energy sources is the most widely used? Hint: The term widely is the key to answering this question correctly as it implies geographic extent, not total use.
A. hydropower B. geothermal C. solar D. wind power
Prior to about 150 years ago, scientists did not have the technology required to make detailed, accurate measurements of precipitation and temperature necessary to characterize Earth's climate.
Answer the following statement true (T) or false (F)
Where the landscape is covered by sand and the crests of the sand dunes are perpendicular to the wind, the dunes are labeled ________
A) transverse B) seifs C) longitudinal D) reverse E) barchans