Question

which water source may become polluted as it travels over land? runoff oceans groundwater ponds

Explanation:

As water travels over land, runoff can pick up pollutants such as chemicals, waste, and debris from various sources like industrial activities, agricultural fields, and urban areas. Oceans are large bodies of water and not typically the source that gets polluted as water travels over land in the initial - stage of over - land movement. Groundwater is beneath the surface and not directly affected by over - land travel in the same way as runoff. Ponds can be affected by runoff, but runoff itself is the water source that becomes polluted as it moves over land.

Answer:

runoff