128
Most substances, either artificial or natural, can
cause harm to man or the environment. Some of
these reach the environment in waste streams; however emission limits and
environmental quality
standards can, in some instances, reduce the amounts released. However,
some other matters cannot
be controlled in this way because they are released, not in industrial waste streams, but through the
use or disposal products which contain them. In many cases these substances pose little or no threat
if the product containing them is used and disposed of properly. The accurate way to
deal with them
is through controls over their supply,
use and disposal
52.
According to the passage, the threat of some certain substances to the environment
_________.
A) is for less than that to man
B) could be reduced by enforcing emission limits and
environmental controls
C) has been unnecessarily over emphasized
D) has to date been completely ignored
E) can be eliminated by the use of industrial waste streams
53.
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