Deep incised river canyons most likely form through some combination of tectonic ________ and climate change that resulted in ________ precipitation
A) uplift, more
B) uplift, less
C) subsidence, more
D) subsidence, less
Answer: A
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Which has been a negative impact from government funding of dam building in the Colorado River Basin?
A. Subsidized water prices have encouraged inefficient irrigation practices. B. Massive evaporation losses have increased vapor pressure in the atmosphere. C. Increased sedimentation downstream of the dams has improved navigation. D. River diversions have decreased rainfall in the mountains of Utah and Colorado.
Most of Earth history has been characterized by conditions that are
A) about the same as today. B) colder than today. C) warmer than today. D) none of these
Which of the following about food chains and food webs is true?
A) Food chains consist of many interrelated food webs. B) Food chains are interconnected to form food webs. C) Food webs consist of either consumers or producers. D) Food webs usually consists of 8 to 10 trophic levels.
The only substance on Earth that occurs naturally as a liquid, a solid, and a gas is ____
a. argon b. oxygen c. carbon dioxide d. water e. iron