11. Deforestation generally decreases
12. Detritus food chain starts from
13. Earthworms and bacteria are called
14. 5th June is observed as
15. Eutrophication means
16. Example of omnivores is
17. Food chain always starts with
18. Formation of ozone is
19. Hydrosphere includes
20. Important abiotic factors in ecosystems include which of the following?
MCQ Multiple Choice Questions and Answers on Environmental Studies
Environmental Studies Trivia Questions and Answers PDF Online
Environmental Studies Question and Answer
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