“If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys.” Which one of the following functions of wetlands best reflects the above statement ?
[amp_mcq option1=”The water cycle in wetlands involves surface runoff, subsoil percolation and evaporation.” option2=”Algae form the nutrient base upon which fish, crustaceans, molluscs, birds, reptiles and mammals thrive.” option3=”Wetlands play a vital role in maintaining sedimentation balance and soil stabilization.” option4=”Aquatic plants absorb heavy metals and excess nutrients.” correct=”option4″]
This question was previously asked in
UPSC IAS – 2022