Although temperatures have fluctuated throughout Earth's history, scientists are greatly concerned about the current warming because ____.
A. it is occurring at a more rapid rate than was typical in the past
B. the sun is getting warmer which amplifies warming on the earth
C. clouds are not reflecting as much radiation now as in the past
D. the ozone hole is allowing more radiation to enter the atmosphere
E. wildfires are more severe and occur with greater frequency
Answer: A
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A) element composition B) pressure C) temperature D) duration the sediments are in solution
NAFTA (North American Free Trade Agreement) is an agreement that does what?
A) Allows the free migration of people between countries in North America B) Limits tariffs and trade restrictions C) Ensures that all countries have strong environmental and workers rights regulations D) All of the above
Cities tend to create distinct microclimates.
Answer the following statement true (T) or false (F)
Which gas accounts for about 78% of the gas in the atmosphere?
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