Why are there volcanoes on the west coast of North America but not on the east coast?
The west coast is an active continental margin where the Juan de Fuca plate is subducting beneath the North American plate causing rock melting and volcanic activity. The east coast is a passive continental margin where no such activity occurs.
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The refractive index of seawater:
A) is greater than freshwater. B) is less than freshwater. C) is equal to freshwater. D) decreases with increasing salinity.
External costs include ________
A) wages B) utilities C) raw materials D) environmental damage E) worker's compensation and insurance
The distribution of many aquatic organisms is determined largely by salinity.
Answer the following statement true (T) or false (F)
________ is a floristic association dominated by tall grasslands and found in the middle latitudes
A) Wetlands B) Deserts C) Steppe D) Savanna E) Prairie