A benefit of sanitary landfills over "open dumps" is that:
A) clay liners at the bottom of the landfill help prevent groundwater pollution.
B) a soil cover minimizes the escape and dispersal of offensive odors.
C) they have systems designed to collect leachate.
D) they tend to have fewer rodents than open dumps.
E) All of these statements are correct

Question

Quizplus · Accepted Answer

All of these statements are correct. Sanitary landfills are engineered to minimize environmental impact, in contrast to open dumps which are unregulated and do not have the same precautions in place. Clay liners help prevent groundwater pollution by providing a barrier between the landfill and the surrounding soil. Soil cover and other measures help minimize odors and the escape of litter and debris. Systems to collect leachate, the liquid that comes from decomposing waste, help prevent contamination of groundwater and lower the risk of spreading disease by reducing the number of rodents and insects attracted to the site.

A Benefit of Sanitary Landfills Over "Open Dumps" Is That