The reason a bullet has more kinetic energy than the recoiling rifle from which it is fired is because the force on the bullet acts over a longer
A) time.
B) distance.
C) both A and B
D) none of the above
B
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Most caverns are created at or near the water table
Indicate whether this statement is true or false.
Relative humidity is usually expressed as a percent
Indicate whether the statement is true or false
How do trees counteract global warming?
A) They are carbon sinks, taking carbon dioxide out of the air. B) They shade Earth's surface. C) They produce oxygen. D) They transpire water vapor into the air.
The decline in the number of farmers in MDCs can best be described as a consequence of
A) push/pull economic factors, including the lack of opportunity in rural areas and higher-paying jobs in urban areas. B) urban sprawl, including the development of rings of suburbs and exurbs around major metropolitan areas, which required larger amounts of farm production. C) push/pull economic factors, including greater opportunities in rural areas and lower-paying jobs in urban areas. D) the increase of populations in urban areas and the reduced population in rural areas. E) the spread of disease and starvation in rural areas, which quickly reduced the populations of farmers.