Complex sentence: The agriculture industry uses over 800,000 tons of pesticides worldwide annually that contaminates the soils and eventually infiltrates into the groundwater causing drinking water to contain toxic chemicals as well as the oceans to be polluted from the stormdrain runoff of these chemicals as well.
Split into simpler sentences: The agriculture industry uses over 800,000 tons of pesticides worldwide annually that contaminates the soils and eventually infiltrates into the groundwater causing drinking water to contain toxic chemicals. The oceans can be polluted from the stormdrain runoff of these chemicals as well.