. Biome is

A. the flora on land

B. the flora in ocean

C. a community of organisms interacting with each other

D. that part of earth and its atmosphere which inhabits living organisms

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  1. Primary treatment of sewage means
  2. Tropical evergreen forests are seen in
  3. Soil particles arranged in order of increasing size are
  4. Competition for food, light and space is most severe in
  5.   Which of the following is normally not at atmospheric pollutant
  6. A pollutant is any substance, chemical or other factor that changes
  7. Increasing accumulation of DDT in organisms of a food chain in higher trophic levels is known as
  8. Smog is a common pollutant in places having
  9. Autumn colouration of leaves appears only in
  10. Deforestation may reduce the chances of
  11. Humus is an example of
  12. An American plant which had become a troublesome weed in India is
  13. What is the major constituent of biomass of an organism
  14. Biologists celebrate 5th June as
  15. The source of energy in the ecosystem is:
  16. The least porous soil among the following is
  17. An area of soil is thoroughly wetted and allowed to drain until capillary movement of water is stopped.…
  18. Which is the correct food chain
  19. The nitrifying bacteria which oxidise nitrite to nitrates include
  20. Pedology is the study of
  21. Desert plants are generally
  22. Which of the following functions performed by forests help most in controlling drought
  23. Correct definition of ecosystem is :
  24. The ultimate source of energy for fish is
  25. First link in any food chain is green plant because
  26. Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
  27. Hie earliest settlers on barren lands are generally
  28. . Biome is
  29. Laterization is a process which results in the
  30. One of these is a renewable source of energy: