Final answer:
Leaching is the movement of pesticides in water from the soil surface. Surface runoff is the flow of freshwater over land from rain or melting ice. Groundwater can seep out of the ground or flow deeper underground to form aquifers.
Step-by-step explanation:
Leaching is the movement of a pesticide in water from the soil surface.
When rain or melting ice occurs, some of the water infiltrates into the ground and becomes groundwater, while the rest flows over the surface of the ground as runoff. Runoff collects in streams and rivers and eventually returns to the ocean. However, groundwater can seep out of the ground or flow deeper underground to form aquifers.
To prevent pesticide leaching and runoff, proper pesticide application techniques and management practices should be followed.