Some coastal landforms are built by sea creatures capable of producing rocklike material called ________.

A) polyps
B) clay
C) calcium carbonate
D) granite
E) sand


Answer: C) calcium carbonate

Environmental & Atmospheric Sciences

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When the quantity of environmental protection is low so that pollution is extensive, then there are usually ______________ to reduce pollution and the ______________ .

A. a few inexpensive and easy ways; average benefit are slightly higher B. a lot of expensive and innovative methods; marginal benefits are quite high C. only a few expensive and innovative methods; average benefits are higher D. a lot of cheap and easy ways; marginal benefits of doing so are quite high

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Answer the following statement true (T) or false (F)

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Indicate whether the statement is true or false

Environmental & Atmospheric Sciences