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#1. Choose the correct answer
#2. Which from the list is not the source of carbon monoxide ?
#3. The occupation of Nitrogen in air is __________
#4. Choose the correct property of air .
#5. The chemicals we use in agriculture are called _______________________
#6. Choose the correct property of air .
#7. The process by which green plants make their own food is called _______________
#8. _____________ is a moving air
#9. The following are the properties of carbon monoxide except
#10. An electronic machine used to input data and process them by after provide output result as information is know as_________
#11. Oxygen occupies ___________ in the air
#12. The growing of crops and the keeping of animal is commonly known as________________
#13. Anything we can see or touch is called _____________________
#14. The tree types of sound are the following except
#15. ________________ is the increase of of atmospheric temperature on earth’s surface
#16. These are the importance of Carbon dioxide except
#17. These are the uses of Oxygen except
#18. ______________ is a work(moisten flour or clay) into dough or paste with hands
#19. The following are the importance of wind in our daily life except
#20. Choose the correct property of air .
#21. Rare gases like Argon is useful in________________
#22. The mixture of Oxygen, Carbon dioxide, Nitrogen ,Rare gases and other gases is called____________________
#23. The growing of seed into seedlings or young plant is commonly known as___________
#24. Nitrogen has the following importance except
#25. Which from the list is not a type of wind?
#26. The reflected sound is called__________________
#27. The processed data is called _____________
#28. The percentage of rare gases in the air is______
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