Match the following columns:Column-IColumn-II | vedclass

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(C) The correct matches are as follows:$1$. Ozone thickness is measured in Dobson units $(DU)$. Thus, $(a)-(iv)$.$2$. $CFC$s (Chlorofluorocarbons) are

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$a(iv), b(ii), c(iii), d(i)$

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(C) The correct matches are as follows:$1$. Ozone thickness is measured in Dobson units $(DU)$. Thus, $(a)-(iv)$.$2$. $CFC$s (Chlorofluorocarbons) are primarily used as coolants in refrigerators and air conditioners. Thus, $(b)-(ii)$.$3$. The $El$ Nino effect is associated with global warming and an increase in global temperature. Thus, $(c)-(iii)$.$4$. Skin cancer is caused by excessive exposure to harmful $UV$ rays due to ozone depletion. Thus, $(d)-(i)$.Therefore, the correct sequence is $a(iv), b(ii), c(iii), d(i)$.

Column-$I$	Column-$II$
$(a)$. Ozone thickness	$(i)$. $UV$ rays
$(b)$. $CFC$	$(ii)$. Refrigerator
$(c)$. $El$ Nino effect	$(iii)$. Temperature increase
$(d)$. Skin cancer	$(iv)$. Dobson unit

Match the following columns:
Column-$I$ Column-$II$
$(a)$. Ozone thickness $(i)$. $UV$ rays
$(b)$. $CFC$ $(ii)$. Refrigerator
$(c)$. $El$ Nino effect $(iii)$. Temperature increase
$(d)$. Skin cancer $(iv)$. Dobson unit

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Match the following columns:Column-$I$Column-$II$$(a)$. Ozone thickness$(i)$. $UV$ rays$(b)$. $CFC$$(ii)$. Refrigerator$(c)$. $El$ Nino effect$(iii)$. Temperature increase$(d)$. Skin cancer$(iv)$. Dobson unit