Electromagnetic energy travels in ____.
A. waves
B. packets
C. nodes
D. modules
E. chunks
Answer: A
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Which of the following are reasons why sharks should be considered important to humans?
a. They never get cancer, and may provide information about how to prevent this disease. b. They are an important source of food c. They are a keystone species d. They never get cancer and are an important source of food e. They never get cancer and are a keystone species
Volcanoes with broad bases and gentle slopes are called:
a) Shield volcanoes b) Stratovolcanoes (or composite cones) c) Cinder cones (or scoria cones) d) Mud volcanoes e) Lava domes
Which of the following latitudes is closer to Earth's axis?
a. ?0°N b. ?15°N c. ?40°N d. ?60°N e. ?90°N
Which of the following convective clouds produces substantial precipitation?
A) cumulus B) cirrocumulus C) altocumulus D) cumulonimbus E) none of the above