pyq/2019/geography-optional-i/1

Answer the following in about 150 words each :

(a) Describe phreatic eruptions and their consequences. (10 marks, 150 words)

(b) Explain the techniques to calculate potential evapotranspiration suggested by Thornthwaite. (10 marks, 150 words)

(c) How are sandspits and tombolos formed? (10 marks, 150 words)

(d) Amensalism is a biotic factor that determines the geographic limits of species. Explain. (10 marks, 150 words)

(e) How do mountaineers constitute a threat to Mount Everest? (10 marks, 150 words)