Sills are:
a. composed of extrusive igneous rock.
b. mushroom-shaped flows of basalt.
c. vertical walls of intrusive igneous rock.
d. horizontal sheets of intrusive igneous rock.
e. the largest type of igneous intrusion.
D
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A typical exterior masonry wall of a house consists of the items in the table shown in Figure P5.12. Assume an inside room temperature of 68oF, an outside air temperature of 10oF, and an exposed area of 150 ft2 . Calculate the heat loss through the wall.
In typical, fairly deep, temperate zone lakes, the vast majority of animals are found in the
a. benthic zone b. profundal and benthic zones c. limnetic zone only d. limnetic and littoral zones e. littoral zone only
France depends on more than half of its energy supply from
A) nuclear power B) wind C) coal D) natural gas E) solar
Lakes severely impacted by acidification will most likely
A) be clear and blue, but with few fish or other animals. B) be dark, muddy, and full of crustaceans and the larvae of insects. C) have abundant surface vegetation and many insects but few fish. D) be reddish in color due to the dissolved iron from nearby soils.