All of the following describe constructive processes except

Clear-cutting, over-mining, over-fishing, driving cars instead of public transportation, urban heat islands, desalinating water (removing the salt out of seawater for one's use), industrial greenhouse-gas emissions.
This is for the environmental destructive processes. Hope this helps!!!
=)

H=   2(area/a+b)h= 2(144/a+b)h= 2(144/18+18)h= 2(144/36)h= 2(4)h=8