What might happen to a losing stream as the water passes from flowing over hard, impermeable rocks to flowing over more permeable rocks?
A. No change will occur in the stream flow.
B. The stream will gain water and flow faster.
C. The stream will lose more water to the subsurface and might disappear.
Answer: C
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Mass wasting is more likely to occur in:
a. deeply weathered material. b. thin layers of loose material. c. bedrock. d. well sorted material. e. material of large grain size
The primary source of water vapor and carbon dioxide for Earth's early atmosphere was most likely ____
A) photosynthesis B) ozone reactions C) outgassing D) nitrogen chemical reactions
Which of the following statements accurately describes gross and net primary production?
A) Gross primary production takes into consideration autotrophic respiration, while net primary production does not. B) Gross primary production involves plants, while net primary production involves animals. C) Gross primary production is always greater than net primary production. D) Net primary production is always greater than gross primary production.
Which of the following is a common characteristic of carbonate rocks?
A. They are commonly reddish. B. They commonly have a dissolved appearance. C. They are commonly black and shiny. D. They do not form cliffs. E. All of these.