Determine whether the description applies to landfills, incinerators, or both.

emits toxins through combustion
drains liquids into the ground
generates ash
requires a substantial amount of land
releases greenhouse gases
can generate energy

Landfill:
Incinerator:
Both:

Landfill: drains liquids into the ground, requires a substantial amount of land

Incinerator: emits toxins through combustion, generates ash, releases greenhouse gases, can generate energy
Both: None of the given descriptions apply to both landfills and incinerators.