Question

what is a major environmental problem with leachate? it can cause localized air pollution. it can pollute groundwater.

Explanation:

Leachate is a liquid that forms when water percolates through waste. It can contain harmful substances. Groundwater is water that exists underground in soil pores and fractures. If leachate seeps into the ground, it can contaminate groundwater. Air pollution is mainly caused by airborne pollutants like particulate matter, gases from combustion etc., and leachate (a liquid) has a more direct impact on water (especially groundwater) rather than being a major cause of localized air pollution.

Answer:

It can pollute groundwater.