A condition that causes a system to change dramatically is a:
a. mental map
b. threshold
c. model
d. subsystem
b
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What major industrial power currently generates 20% of its total energy budget from renewable resources?
A) Denmark B) Great Britain C) Germany D) United States E) China
The type of rock that the materials shown in this photograph would produce is
A) sedimentary.
B) igneous.
C) metamorphic.
D) hydrothermal.
What are some of the drawbacks of nuclear energy?
a. Overheating or meltdown might cause a steam explosion b. A nuclear power plant might explode like an atomic bomb c. It yields radioactive nuclear waste that is difficult to store d. The cooling tower requires significant clean water resources e. Both a and c
Known deposits from which oil can be extracted profitably at current prices using current technology are called ____.
A. demonstrated oil B. oil production C. proven oil reserves D. ready oil E. heavy oil