What is the most common cause of tsunamis?
a. earthquakes
b. volcanic eruptions
c. landslides
d. meteorite impacts
e. hurricanes and cyclon
A
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The ________ is an important source area for U.S. folk house types
A) Middle Atlantic B) Southern Atlantic C) Northeast D) Upper New York highland E) Southwest
The accumulation zone of a glacier ends at the ________, which marks the elevation above which the winter snow and ice remained intact throughout the summer
A) firn line B) snow line C) terminal moraine D) ice field
If there was once one supercontinent over 200 million years ago, then there was a single ocean called ____
A) ?Pangaea B) ?Panthalassa C) ?Oceanus D) ?Tethys
The energy for the downward movement of groundwater is provided by gravity Indicate whether the statement is true or false