The longest of all visible light waves are ________
A) violet
B) red
C) green
D) yellow
E) orange
Answer: B
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Humid subtropical climates (Cfa) are found principally ____, roughly between 25° and 40° latitude
a. on small islands b. next to mountain ranges c. in the interior of continents d. along the east coasts of continents e. along the west coasts of continents
Which of the following is correct regarding valley glaciers?
A) The snowfield sources for these glaciers are usually found right at the snowline. B) They occur in an unconfined environment—like an open plain. C) They may range in length from 100 m (325 ft.) to 100 km (62 mi.). D) They remain stationary and do not move.
Which type of radiation is capable of causing a mutation?
A) microwaves B) radio waves C) ultraviolet light D) all of these
Of Earth's remaining wilderness areas, about ____ are strictly or partially protected by law from human activities
a. 5% b. 20% c. 45% d. 50% e. 55%