Match the water pollutants given in List-$I$ with their sources given in List-$II$.
List-$I$ List-$II$ $A$. Toxic heavy metals $1$. Soil erosion from agricultural and mineral industries. $B$. Pesticides $2$. Domestic sewage disposal. $C$. Sediments $3$. Chemical factories and industries. $D$. Microorganisms $4$. Substances used to kill insects,fungi,and weeds.
| List-$I$ | List-$II$ |
|---|---|
| $A$. Toxic heavy metals | $1$. Soil erosion from agricultural and mineral industries. |
| $B$. Pesticides | $2$. Domestic sewage disposal. |
| $C$. Sediments | $3$. Chemical factories and industries. |
| $D$. Microorganisms | $4$. Substances used to kill insects,fungi,and weeds. |
(A-3, B-4, C-1, D-2) The correct matching is:
$A-3$: Toxic heavy metals are released by chemical factories and industries.
$B-4$: Pesticides are substances used to kill insects,fungi,and weeds.
$C-1$: Sediments result from soil erosion due to agricultural and mineral industries.
$D-2$: Microorganisms are introduced through domestic sewage disposal.
Therefore,the correct sequence is $A-3, B-4, C-1, D-2$.
$A-3$: Toxic heavy metals are released by chemical factories and industries.
$B-4$: Pesticides are substances used to kill insects,fungi,and weeds.
$C-1$: Sediments result from soil erosion due to agricultural and mineral industries.
$D-2$: Microorganisms are introduced through domestic sewage disposal.
Therefore,the correct sequence is $A-3, B-4, C-1, D-2$.
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