A Hadley cell forms when air rises over the equatorial trough and sinks over the subtropical high-pressure belt, which in turn produces trade winds that return to the equatorial trough.
a. true
b. false
Ans: a. true
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Swidden agriculture
A) works best in regions of medium to high population density. B) is most common on coastal plains. C) depletes soil nutrients within a few years. D) usually is associated with paddy rice production E) has benefited significantly from logging operations
Sometimes, the pyroclastic material that flows from a volcano is so hot that it fuses together to form a
deposit known as ____________________. Fill in the blank(s) with the appropriate word(s).
Island species, which are often found nowhere else, are especially vulnerable to extinctions when their habitat is destroyed.
Answer the following statement true (T) or false (F)
Which of the following nations continues to hunt whales legally under an objection to the International Whaling Commission ban on commercial whaling?
A) Greenland B) China C) Norway D) Russia E) United States