About: major environmental problem

Premodifier: major environmental
Head noun: problem

Same concepts

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
global warming	isap:433487522	0.822231
climate change	isap:442811881	0.793802
acid rain	isap:6837509	0.699580
soil erosion	isap:433212517	0.653245
air pollution	isap:28880615	0.652378
pollution	isap:28880356	0.629213
desertification	isap:29454462	0.483393
water	isap:229905763	0.417115
mercury	isap:429663688	0.145247