( Clearly ( , ( deforestation ( ( contributes ( to ( ( global ( warming ( and ( ocean acidification ) ) ) ) ( -LRB- ( ( see ( ( my ( two postings ) ) ( ( entitled ( ( ( ( ( Solar Activity ) , ) ( Greenhouse ( Gas Levels ) ) ) and ) ( Climate Change ) ) ) ( on ( ( ( Our Earth ) and ) ( Atmospheric ( Carbon ( Dioxide ( Levels ( and ( Ocean Acidification ) ) ) ) ) ) ) ) ) ) ) -RRB- ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Clearly)) (, ,) (NP (NN deforestation)) (VP (VBZ contributes) (PP (TO to) (NP (NP (JJ global) (NN warming) (CC and) (NN ocean) (NN acidification)) (PRN (-LRB- -LRB-) (S (VP (VB see) (NP (NP (PRP$ my) (CD two) (NNS postings)) (VP (VBN entitled) (NP (NP (NNP Solar) (NNP Activity)) (, ,) (NP (NNP Greenhouse) (NNP Gas) (NNP Levels)) (CC and) (NP (NNP Climate) (NNP Change))) (PP (IN on) (NP (NP (PRP$ Our) (NN Earth)) (CC and) (NP (NNP Atmospheric) (NNP Carbon) (NNP Dioxide) (NNP Levels) (CC and) (NNP Ocean) (NNP Acidification)))))))) (-RRB- -RRB-))))) (. .)))
Clearly, deforestation contributes to global warming and ocean acidification (see my two postings entitled Solar Activity, Greenhouse Gas Levels and Climate Change on Our Earth  and Atmospheric Carbon Dioxide Levels and Ocean Acidification ).
(ROOT (S (NP (NNP Ocean) (NNP acidification)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (NP (JJ excess) (NN carbon) (NN dioxide)) (PP (IN in) (NP (DT the) (NN atmosphere)))) (VP (VBZ causes) (S (NP (DT the) (NNS oceans)) (VP (TO to) (VP (VB become) (NP (NNS acidic))))))))) (. .)))
Ocean acidification occurs when excess carbon dioxide in the atmosphere causes the oceans to become acidic.