Although these criteria overlap and may not be exhaustive, they fonn a
useful basisfor judgement.
The consensus of the Commission's survey was that a fairly restricted
number of problems were found to recur time and again.The major critical
problem may be summarized as, "the adverse effects of a changed
environment on human health and well-being"; Le., the possibility that a
Those problems considered most relevant for early implementation by a
global environmentalmonitoring system are: