Compressions and rarefactions of a longitudinal wave travel in
A. opposite directions.
B. the same direction.
C. both of these
D. none of the above
Answer: B
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Of the following strategies to reduce acid deposition, the most effective is probably
a. using low-sulfur coal b. adding phosphate fertilizer to acidified lakes c. adding more topsoil to thin soil with little buffering capacity d. adding lime to neutralize the acids e. implementing prevention approaches that reduce or eliminate emissions
Which precipitation mechanism takes place when a warmer air mass rises after encountering a colder, denser air mass?
a. convectional precipitation b. frontal precipitation c. cyclonic (or convergence) precipitation d. orographic precipitation e. radiation precipitation
Discuss two of the many serious environmental crises that occurred during the 20th century that alerted North Americans to the importance of becoming more aware of environmental limitations
What will be an ideal response?
Which of the following conditions is primarily responsible for the cold water along the northern California coast in summer?
A. upwelling B. cold air moving over the water C. oceanic fronts D. the California Current