The newest bonanza for recycling scarce and toxic metals is to recover them from ________
A) car batteries
B) e-wastes such as computers
C) construction dump sites
D) compact discs, LPs and 8-track tapes
E) landfills from the 1960s
B
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Stress-strain behavior of rocks is affected by changes in:
a. confining pressure b. temperature c. deformation rate d. all of the above
Nutrients are nonconservative constituents of seawater because they ________.
A. are recycled into plants and animals B. maintain constant ratios to each other C. do not maintain constant ratios to each other D. maintain constant ratios to each other and are recycled into plants and animals E. do not maintain constant ratios to each other and are recycled into plants and animals
Compared to a recoiling cannon, the cannonball that is fired has a greater
A. kinetic energy. B. momentum. C. both the same. D. none of the above
What physical factor can denature or alter a proteins structure in a cell?
A) Phosphorus B) Nitrogen C) Light D) Salinity