The concept of Earth’s crust “floating” on the denser underlying mantle:
a. outwash
d. cyclothem
b. accretion
e. interglacial stage
c. isostasy
C
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Magnetic domains normally occur in
A. iron. B. silver. C. copper. D. all of the above
What was the focus of the Chapter 1 Investigation?
A) The effects of rising sea level due to climate change B) The effects of melting glaciers due to climate change C) How air pollution can cause climate change D) The impacts of deforestation of the land E) All of these choices are correct
What dissolved gases are required by nearly all marine organisms?
a. carbon dioxide and nitrogen b. carbon dioxide and sulfide c. carbon dioxide and oxygen d. oxygen and nitrogen e. oxygen and phosphorus
Which of the following examples of non-point source pollution cannot legally be dumped anywhere in the ocean?
a) glass b) rags c) dunnage (lining and packing materials that float) d) plastic e) all of the above cannot legally be dumped anywhere in the ocean