പരിസ്ഥിതി
Landfill major problem?
A. Leachate & methane generation
B. Produces pure oxygen
C. Instantly biodegradable all waste
D. No groundwater impact ever
വിശദീകരണം:
Landfills contaminate soil/water, emit methane GHG.
ഉറവിടം: Waste Management