Which of the following scenarios represents the best nonstructural approach to flood control?
A) Building an artificial levee two feet taller than the highest recorded flood
B) Managing a floodplain to limit development in sensitive areas
C) Paving the floodplain to increase the velocity of floodwaters
D) Creating a series of dams and reservoirs to store floodwater and release it slowly over time
Answer: B
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Such a change is an example of A) mitigation. B) a cap-and-trade policy. C) adaptation. D) the Precautionary Principle.
A ________ is one of the few optical phenomena more frequently observed with the moon than the sun
A) corona B) pillar C) green flash D) halo
Oceanic lithosphere subducts (sinks into the asthenosphere) because ________
A) the upwelling magma at divergent boundaries pushes the lithospheric plate into the asthenosphere B) the pressure from two plates colliding forces one plate into the asthenosphere C) The convection of the mantle pulls the lithosphere into the asthenosphere D) old oceanic lithosphere is more dense that the asthenosphere
The creation of many glacial lakes during the Pleistocene is labeled a(n) ________ development
A) random B) insignificant C) aeolian D) pluvial E) fluvial