Both. Radioisotopes decay because they are atomically unstable. This can be used to advantage in medical treatment or diagnosis and in other forms of research or inspection. But radioactive decay releases ionizing radiation, and that is invariably harmful to living tissue. The problem presents as one of weighing the cost-benefit ratio of a given application. As just one example, radiation kills tissue, but it kills cancerous tissue much more readily than "regular" tissue. This makes radiation tratment by radioisotopes beneficial in cases where other options are limited.
yes
thesisWhich
tracer
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It is 2.6 years.
some colloids cause pollution in the environment...some colloids release cfc's that contributes to the ozone layer depletion...
the harmful and the beneficial effects of advertising?
Harmful.
Cows are very beneficial.
it is a beneficial plant
Gasoline
beesk
examples of harmful liquids
it depends on the type of the bacteria. also beneficial bacterias outnumber the population of harmful bacterias.
It is not harmful. it is making food forall creatures.
Harmful.
no but your mom is with me no but your mom is with me
Gasoline