( ( Thermal pollution ) ( ( ( may also ) ( result ( when ( ( industries ( -- ( ( especially ( electrical ( power companies ) ) ) -- ) ) ) ( release ( ( the water ) ( used ( for ( ( cooling ( their machines ) ) ( into waterways ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Thermal) (NN pollution)) (VP (MD may) (ADVP (RB also)) (VP (VB result) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS industries)) (PRN (: --) (RRC (ADVP (RB especially)) (NP (JJ electrical) (NN power) (NNS companies))) (: --))) (VP (VBP release) (NP (NP (DT the) (NN water)) (VP (VBN used) (PP (IN for) (S (VP (VBG cooling) (NP (PRP$ their) (NNS machines)) (PP (IN into) (NP (NNS waterways))))))))))))) (. .)))
Thermal pollution may also result when industries--especially electrical power companies--release the water used for cooling their machines into waterways.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (DT the) (NN temperature)) (PP (IN of) (NP (NN water)))) (VP (VBZ is) (VP (VBN increased) (PP (IN after) (S (VP (VBG being) (VP (VBN used) (PP (IN in) (S (VP (VBG cooling)))))))))))) (, ,) (NP (PRP it)) (VP (VBZ is) (NP (JJ thermal) (NN pollution))) (. .)))
When the temperature of water is increased after being used in cooling, it is thermal pollution.