Apart from the new substances entering the market, the phase out of existing ones, which have been definitely identified as damaging the ozone layer, is far from complete.
Some substances need to be taken off the market due to their environmental impact.
( z1 need :ARG1 ( z2 take-off :ARG1 ( z3 substance :quant ( z4 some ) ) :source ( z5 market ) :ARG1-of ( z6 cause :ARG0 ( z7 impact :ARG0 z3 :ARG1 ( z8 environment ) ) ) ) )