11.soil erosion

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11.Soil Erosion Time to Answer Full in the blanks.  1.Removal of fertile topsoil is soil erosion.  2.The two natural agents of soil erosion are wind     and water .  3. Large - scale cutting down of forests is known as deforation .  4.plants take nutrients from soil .  Write true or false.  1. Soil conservation is the protection of soil from erosion.  Ans. True 2.Afforestation is large scale cutting down of trees.  Ans. False 3. Power plants are built on rivers to control force of flood water.  Ans. False 4. Overgrazing should be prevented to avoid soil erosion.  Ans. True 5. The practice of terrace farming helps to reduce soil erosion.  Ans. True.    Match the following.  a. Organisms living in soil =soil life b. Earthworm= Farmers friend c. Crop rotation= Improves fertility of soil d. Crop= plants grown by farmers Q4. Short answer type questions a. What is terrace farming?  An...
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1.Number sense (olympiad)

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 Olympiad
1.Number sense
11,20 questions

11. The smallest 4 - digit number that can be formed by using the digits 5,9,8,7 ( without repeating the digits) will have which number at its tens place? 
Ans. Smallest 4 digit no is - 5789
And at tens place there are 8
So (C) 8

12.The numeral from of eight thousand and seventy six is
Ans. (B) 8076

13.which of the foy child number has at tens place? 
Ans. (A) 

14.which of the follhas the place value of 3 as 300? 
Ans. (C) 

15. If hundred place digit and units place digit are interchanged in each of the given numbers, then which of the following number is even? 
Ans. (D) 

16.select the correct option
Ans. (B) 

17.which of the following abacuses shows the number " Four thousand three hundred and twenty one"? 
Ans. (B) 



Std three olympiad ans

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