Given that the total number of atoms on our planet remains fairly constant, how is it ever possible to deplete a natural resource such as a metal?
A. The atoms don't leave our planet, which is why naturally occurring materials never really reach the point of depletion.
B. The problem is with the expense of collecting metal atoms that are uniformly dispersed.
C. The problem remains that not everyone recycles as they should.
D. Recycling only forestalls the inevitable depletion of metal resources.
Answer: B
You might also like to view...
The physical environment neither affects nor limits the activities of humankind
Indicate whether the statement is true or false.
Intrusive igneous rocks
a) Are generally fine grained b) Form at Earth's surface c) Are quite often vesicular d) Are also termed volcanic e) None of the above
Which of the following soil-climate associations is INCORRECT?
A) climate = controls plant and animal life that comprise the soil when they die and decay B) hot, wet climate = thick layer of chemically weathered soil C) cold, dry climate = thin mantle of mechanically weathered debris D) type of soil = controls the type and amount of precipitation that falls
Which remote sensing system is used to measure land surface elevations?
a. thermal infrared b. lidar c. aerial photographs d. near-infrared e. ultraviolet (UV)