What is NOT a problem with solar energy?
A) cost
B) the ability to collect it varies by latitude and season
C) maintenance of systems can be problem
D) it is difficult to store for long periods without large banks of cells or batteries
E) it is difficult to transport
E
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________ is an example of a prorupt state
A) Poland B) Thailand C) Zimbabwe D) Chile E) Japan
Why did the ancients believe that celestial objects had some influence over their lives?
What will be an ideal response?
The Earth's axis is at an angle of ________ relative to the vertical of the plane of rotation about the Sun.
A. 66.5° B. 23.5° C. 45° D. 0° E. 13.5°
Which climate supports little or no agriculture?
a. mediterranean summer--dry b. midlatitude steppe c. tropical and subtropical steppe d. tropical and subtropical desert e. complex mountain