When air masses meet what type of boundary zone develops between them?
a. A heat wave
b. Hurricanes
c. A front
d. A drought
e. Earthquakes
c. A front
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Explosive volcanoes that cause death and destruction are more likely to be composite cone volcanoes
Indicate whether the statement is true or false.
Most plants acquire their minerals from ________
A) fertilizers B) nutrients in rainfall and dust storms that transport minerals into a region C) detritus and the weathering of rock D) the precipitation of minerals from rainfall
Which of the following proteins has an extended helix secondary structure?
A) collagen B) keratin C) silk D) none of these
Shortages of freshwater in some locations are caused by all of the following EXCEPT ____
a. decreased amount of freshwater evaporating from oceans and falling on land b. population increases c. greater agricultural usage d. greater industrial usage e. regional transfer of water supplies