11. Acid deposition causes
12. Melanornia (skin cancer) is associated with
13. When oil and gas resources are burnt they kill many forests and lakes by
14. Soil pollution is caused by
15. What is hibernation and aestivation?
16. Fog that most often forms as warm rain falls into a cold layer of surface air is called:
17. Fine organic or inorganic particles suspended in air is called
18. CFCs are used as
19. Ramsar Convention refers to the conservation of ____________
20. The earth's atmosphere is divided into layers based on the vertical profile of:
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