Why is the sea level dropping in certain places like Scandinavia?
A. postglacial rebound
B. sediment deposition
C. shoreline erosion
D. global warming
Answer: A
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The ________ path of energy policy relies more on decentralized power generation
Fill in the blank(s) with correct word
A(n) ________ is a step-like landform found above a stream and its floodplain. It is a remnant of an older flood plain or river-eroded flat surface.
A. levee B. upland plateau C. cut bank D. stream terrace E. incised meander
Considering the age of the Earth and that the half-life of the isotope uranium-238 (238U) is 4.5 billion years, and assuming no additional 238U was produced after the Earth formed, approximately what fraction is left on Earth?
A. one-third B. none C. eighty percent D. half
Toxic metals such as lead, cadmium, and mercury
A. Usually don't accumulate in food chains B. Can be toxic if high concentrations are reached C. Are the most common health threat in water D. Can be toxic in extremely small quantities E. Rarely threaten water supplies