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The best indicator of SO^2 pollution is

A. Lichens

B. Algae

C. Fungus

D. Fems

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  1. Vegetation in Delhi is predominantly
  2. Hie sequence blue green algae > crustose lichens foliose lichens > mosses shrubs dicotyledonous…
  3. . Biome is
  4. An American plant which had become a troublesome weed in India is
  5. The first stage of plant succession on earth is called
  6. What will happen if our water resources are continued to be polluted by industrial wastes
  7. The ultimate source of energy for fish is
  8. Deforestation may reduce the chances of
  9. First link in any food chain is green plant because
  10. Competition for food, light and space is most severe in
  11. The food chain in which microorganisms break down the energy-rich compounds synthesized by producers…
  12. Water plants usually have
  13. Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
  14. Which one of the following is associated with the conservation of forest ?
  15. Correct definition of ecosystem is :
  16. Biologists celebrate 5th June as
  17. Desert plants are generally
  18. One of these is a renewable source of energy:
  19. Commensalism is
  20. Primary treatment of sewage means
  21. An area of soil is thoroughly wetted and allowed to drain until capillary movement of water is stopped.…
  22. Which is the correct food chain
  23. Humus is an example of
  24. In grassland ecosystem the pyramid of energy is
  25. A habitat of long severe winters and growing season limited to a few months of summer constitutes
  26. Biosphere is:
  27. The least porous soil among the following is
  28.   Which of the following is normally not at atmospheric pollutant
  29. The biggest herbarium of India is
  30. A pollutant is any substance, chemical or other factor that changes