Question

1. which human activity directly affects the quality of freshwater resources?depleting the ozone layerburning gasoline in car enginesthrowing trash out of car windowsallowing runoff from agricultural fieldsclear all

Explanation:

• Ozone layer depletion impacts atmospheric UV levels, not freshwater quality directly.
• Car gasoline burning contributes to air pollution, not direct freshwater contamination.
• Trash thrown from cars can pollute land first, with indirect freshwater impact at best.
• Agricultural runoff carries fertilizers, pesticides, and sediment directly into freshwater sources, immediately degrading its quality.

Answer:

D. allowing runoff from agricultural fields