Material from spent nuclear fuel rods must be stored for how long before it is safe?
A. 25 years
B. 100 years
C. 1,000 years
D. 150,000 years
E. 240,000 years
Answer: E
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True or False: Chemical weathering causes rocks to disintegrate into smaller rocks or into even smaller grains
Indicate whether this statement is true or false.
Currents that form from the collective movement of wave water refracted off a shoreline are:a
rip currents. b. nearshore currents. c. longshore currents. d. upwelling currents. e. refraction currents.
Coral reefs
A) require water that is high in sediment concentrations. B) are made of animals living symbiotically with simple algae. C) tend to occur poleward of 30° N/S. D) survive in a broad ecological range because they are tolerant of temperature, salinity, and depth variations. E) are found primarily in deep oceans.
Which of the following generates most ocean waves?
A) Large objects falling into the ocean B) Passing ships at the surface C) The movement of different air masses D) Tidal movement and turbidity currents E) Wind blowing across the surface