Green building approaches reduce the ecology footprint of buildings through use of ________
A) fossil fuels
B) imported natural materials
C) sprawl
D) brownfield sites
E) materials with low embodied energy
Answer: E
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A sample of radium is usually a little warmer than its surroundings because
A) it efficiently absorbs and releases energy from sunlight. B) its atoms are continually being struck by alpha and beta particles. C) it is radioactive. D) it emits alpha and beta particles.
How does a mineral resource differ from an ore deposit?
An ore deposit occurs naturally, whereas a mineral resource does not. Ore deposits are economically extractable, whereas mineral resources are not. Mineral resources are concentrations of metals, whereas ore deposits are not. Ore deposits are concentrations of metal, whereas mineral resources do not contain metals. A mineral resource occurs naturally, whereas an ore deposit does not.
When organisms are distributed in small patchy aggregations the distribution is called: a. random
b. uniform. c. clumped. d. sketchy.
Climatologists warn of a tipping point when global temperatures trigger unavoidable catastrophic events and sea levels rise more than 25 feet. What single event would cause the sea level to rise that much?
A) Increased precipitation over the continents B) Melting of the Greenland Ice Sheet C) Thermal expansion of the oceans D) Melting of the polar ice caps