question_answer 33)

  Which of the following is an ecosystem service provided by a natural-ecosystem? (a) Cycling of nutrients (b) Prevention of soil erosion (c) Pollutant absorption and reduction of the threat of global warming (d) All of the above

Answer:

                  (d) A natural ecosystem maintains its biotic and abiotic factors naturally. The products of ecosystem processes are called the ecosystem services. A healthy ecosystem provides a wide range of economic, environmented and aesthetic goods and services. The various ecosystem services provided by a natural ecosystem includes (i) Purify air and water (ii) Migration of droughts and floods (iii) Nutrient cycling (iv) Generation of fertile soil (v) Maintenance of biodiverstity (vi) Provide storage site for carbon (vii) Pollinate crops (viii) Also provides aesthetic, cultural and spiritual valves Thus, all the above options are correct.