Ultraviolet radiation levels have ____ over the United States since the 1980s
A) declined
B) increased
C) stayed the same
D) varied
B
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Which of the following is a scientific hypothesis?
A) The Moon is made of green cheese. B) There are things we will never know about. C) Matter is filled with undetectable particles. D) There are parts of the universe that will never be found by man. E) none of the above
The process of water vapor changing directly to ice without becoming a liquid first is called ____________________
Fill in the blank with correct word.
For a given location, energy losses exceed energy gains immediately after the summer solstice
Indicate whether the statement is true or false
A(n) ________ scale remains correct even if the map is enlarged or reduced when reproduced
A) isogonic B) large C) graphic D) representative fraction E) color