SimilarityRank
environmental_issue 0.762 11632
social_problem 0.744 19159
environmental_challenge 0.738 68452
global_problem 0.724 66690
economic_problem 0.704 38699
environmental_crisis 0.703 74211
environmental_degradation 0.703 26308
environmental_pollution 0.694 52695
environmental_concern 0.682 27548
water_pollution 0.670 34005
global_challenge 0.649 41446
political_problem 0.647 63987
pollution 0.645 4581
environmental_risk 0.640 55873
sustainability_issue 0.638 67594
environmental_impact 0.631 13807
social_issue 0.626 13917
global_issue 0.624 34072
biodiversity_loss 0.618 86453
global_climate_change 0.617 29854
environmental_damage 0.609 43109
environmental_hazard 0.606 76675
complex_problem 0.605 48012
loss_of_biodiversity 0.603 94363
air_pollution 0.603 13199