QuestionEnvironment / sea level rise
The broad estimates of sea level rise due to global warming by 2100 is approximately:
- (a) 10 cm
- (b) 20 cm
- (c) 30 cm
- (d) 40 cm
Answer: (d) 40 cm
IPCC projections put global mean sea level rise by 2100 at roughly 0.3–1 m depending on emissions; the broad mid estimate used in texts of that time is about 40 cm (IPCC AR5: 26–82 cm). Main causes: thermal expansion and melting ice.