Question

which of these describes an economic aspect of waste incineration facilities? they are completely pollution - free. they are totally illegal in the us. they are not regulated by the epa. they are very expensive to build.

Explanation:

The cost - related aspect is an economic one. Building waste incineration facilities requires significant financial resources, which is an economic consideration. The other options pertain to environmental, legal, and regulatory aspects rather than economic ones.

Answer:

They are very expensive to build.