Since the 1960's South Korea has imported iron and copper because
a. it has never had the natural reserves of these nonrenewable minerals
b. industrial applications that require these metals has surged since then
c. it exported large amounts of these nonrenewable minerals in the 1950's and since then has not had enough to meet its own demands
d. rapid economic growth alone has outstripped the country's ability to meet demands
e. it is both cheaper and less polluting to import the minerals rather than mine for them in their own country
C
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Which statement least describes ecosystem modeling?
a. It is typically applied only to very small natural systems, such as a single pond or stream. b. It has developed since the 1960s. c. It can be applied to complex systems that cannot be adequately studied in the field or laboratory. d. It requires input of baseline data from field studies. e. It requires input of baseline data from laboratory studies.
An Environmental Impact Statement (EIS) is required for any federal project that has
A. Major building projects B. Major new pollution emissions C. Possible health threats to people D. Potentially harmful effects on areas of cultural, scientific, or historical importance E. All of these
A heavy pile driver starting from rest falls on a pile with a force that depends on the
A) original height of the driver. B) original potential energy of the driver. C) distance the pile falls. D) all of the above E) none of the above
What type of plate boundary is depicted in this figure?
A. continental collision boundary B. oceanic divergent boundary C. ocean-ocean convergent boundary D. transform boundary E. ocean-continent convergent boundary