Prolonged exposure to UV-B light can cause sunburn, and there are worries that damage to the ozone layer may lead to an increase in the incidence of skin cancer.
Sunburn and cancer are not positive outcomes of prolonged sun expose in South Africa.
( z1 outcome :polarity - :mod ( z2 positive ) :domain ( z3 and :op ( z4 burn :ARG0 ( z5 sun ) ) :op ( z6 cancer ) ) :ARG1-of ( z7 cause :ARG0 ( z8 expose :ARG2 ( z9 sun ) :ARG1-of ( z10 prolong ) :location ( z11 country :name ( z12 name :op "South" :op "Africa" ) ) ) ) )