Which of the following is NOT necessarily a property of an air mass?
A) It must be large.
B) It must have relatively uniform properties within itself.
C) It must have a warm front at its leading edge.
D) It must travel as a recognizable entity.
E) It must modify as it leaves its source region.
Answer: C
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When ice melts into liquid water, a(n) _____________________ change has occurred.
Fill in the blank(s) with the appropriate word(s).
A federal state indicates a country in which ________
A) Power is shared formally between federal and state level B) Power is concentrated at the federal level and states have little power C) Power is concentrated at the state level and there is a weak federal presence D) Power is completely at the federal level, and the state's leadership are all federal employees
The two factors that attracted Walt Disney to build Disney World in Orlando Florida were ________
Fill in the blank(s) with correct word
What prevents the contamination of groundwater in landfills?
A. locating them below the water table B. locating them in deserts C. locating them in layers of impermeable rock D. locating them at least 6 meters above the water table