Air resistance acting on a fast-moving football shortens its
A. maximum height.
B. range.
C. both of these
D. none of the above
Answer: C
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Circular Earth orbits are characterized by a constant
A. radial distance. B. acceleration. C. speed. D. all the above
Cattle production in the United States and other developed nations involves CAFOs that
A) produce large amounts of manure, all of which is diverted into soil restoration. B) produce 14% of the greenhouse gas methane, which causes global warming. C) generate income used to support the large population of native people. D) produce leather, which sustains millions of workers in the Brazilian leather industry.
Highly persistent toxic chemicals
A. Accumulate within one organism but break down at higher trophic levels B. Retain their toxicity as they cycle through the food chain and environment C. Are usually not that toxic in their life span D. Are highly unusual among artificial chemicals E. Lose their toxicity once released in the environment
Where does a tropical cyclone or hurricane get its energy?
a. in the heat and moisture rising from a low-pressure cell of the tropical ocean b. from heat of the sun shining off a hot desert near the equator c. from high temperatures of a humid high-pressure weather cell near the equator d. from high summer temperatures over humid equatorial jungles e. in the dry, cool air coming from a low-pressure cell of an adjacent ocean