Sulfur found in coal is ultimately responsible for adverse ecological effects of acid precipitation.
True
False
Don't Know
May Be
Which of the following statements is true of renewable resources?
They are about to run out.
They can be renewed over relatively short time spans.
They are extremely rare.
They require millions of years to renew.
An oil trap is a(n) __________.
impermeable layer of rock.
underground lake of oil
mechanical device used to collect oil
geologic environment that allows oil and gas to accumulate
Nearly 50% of our air pollution is a consequence of __________.
fuel combustion for transportation
automobile factories
heat production for houses
none of the above
Tar sands are __________.
a cheap and easily recoverable source of energy
mixtures of clay and sand caombined with water and bitumen
layers of sand mixed with layers of petroleum
available everywhere on Earth at a depth of 4,000 feet beneath the surface
According to the information at this Department of Energy (DOE) site, U.S. consumption of renewable energy resources __________ between 1997 and 2001.
decreased
increased
remained about the same
Which of these resources is mined most often from ignous rocks?
coal
bauxite
diamonds
gold
A computer virus that actively attacks an anti-virus program or programs in an effort to prevent detection is
Worm
Retrovirus
Trojan
Ghost virus
Which company created the most used networking software in the 1980's
Microsoft
Sun
Novell
IBM
Which of the following is not related to programming
Subroutine
Compile
Null pointer
Interleave