What kind of resource is waste disposal?
a. Physical resource
b. Marine energy resource
c. Biological resource
d. Nonextractive resource
ANS: D
Nonextractive resources include the uses of the ocean as it keeps in place. The transportation of people
and commodities, recreation, and waste disposal are all examples of this type of resource. Information
can be found in the section Marine Resources.
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In raising a 5000-N piano with a pulley system, it is noted that for every 1 m of rope pulled down, the piano rises 0.1 m. Ideally, this means the force needed to lift it is about
A) 50 N. B) 500 N. C) 5000 N. D) not enough information given
Which of the following elements is present in thiols but not in alcohols?
A) C B) O C) P D) S
The only substance near Earth's surface that is found naturally in the current atmosphere as a solid, liquid, and a gas is
a. carbon dioxide. b. water. c. molecular oxygen. d. ozone. e. carbon.
Aquaculture ________
A) produces less fish per unit area compared to ocean water harvesting B) frequently results in unintended catch of nontarget species C) can bring economic benefits and food security to many developing regions D) requires the flooding of fields to produce water-intensive crops such as cotton and rice E) has no real environmental disadvantages