Answer :
Final answer:
Excessive use of fertilizers and pesticides in agricultural practices contributes to water pollution, causing algal blooms and dead zones.
Explanation:
Water pollution from agricultural activities primarily occurs due to the excessive use of fertilizers and pesticides. When these chemicals are applied to farm fields, they can be carried by rainwater runoff into nearby rivers and lakes, leading to algal blooms and the creation of dead zones where aquatic life cannot survive.
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