Advantages of radioactive-waste disposal in bedded salt deposits include all of the following except
A. the abundance of available abandoned salt mines.
B. salt blocks radiation from radioactive decay.
C. the high melting temperature of salt, which helps contain heat-producing wastes.
D. the fact that salt will flow plastically and self-seal under pressure.
Answer: B
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Why did extensive flooding occur upstream of St. Louis during the 1993 Mississippi River flood?
A) Widespread urbanization in the upper portion of the basin increased runoff to a great degree. B) Floodwalls protecting St. Louis caused a bottleneck in the river's flow. C) The St. Louis floodwall failed, flooding St. Louis and the area upstream. D) An intense thunderstorm dropped several inches of rain on the area in only a few hours.
Subduction explains the fact that the oldest oceanic crust is close to 200 million years old, compared to the oldest continental rocks that are ________.
A. 140 million years old B. 1.4 billion years old C. 4.4 million years old D. 14.4 billion years old E. 4.4 billion years old
List five transitions that are necessary for a future sustainable civilization
What will be an ideal response?
The fee-per-____ waste collection systems charge consumers for the amount of waste they throw away.
A. unit B. product C. material D. energy E. bag