31. The Primary Consumers are also called as
32. Green plants are absent in deep sea. Why?
33. Gas released during photosynthesis is
34. What is Plankton?
35. The area to which a species is biologically adapted to live is known as ............................
36. The source of atmospheric oxygen is
37. Nitrogen gas returns to the atmosphere by the action of
38. Which is an example for sedimentary biogeochemical cycle
39. North American grassland are called
40. An example of an abiotic component
MCQ Multiple Choice Questions and Answers on Ecosystem
Ecosystem Question and Answer