Is it a good practice to remove grass and small plants that are growing in an open, unused field? Give reason to support your answer
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0
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2246
|
March 24, 2018
|
How can a farmer convert acidic soil to neutral soil?
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0
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4476
|
March 24, 2018
|
Which of the following situations ‘A’ or ‘B’ is advantageous for absorption of water and minerals? Why?
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0
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2367
|
March 24, 2018
|
Explain the mechanism of breathing in human beings
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0
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2683
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March 24, 2018
|
How does gaseous exchange take place in earthworms , fish?
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0
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1856
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March 24, 2018
|
Distinguish between the following. Breathing and Respiration
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0
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3623
|
March 24, 2018
|
List the similarities and differences between aerobic and anaerobic respiration
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0
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7072
|
March 24, 2018
|
Observe the figures given as (A) and (B) and answer the following
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0
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2214
|
March 24, 2018
|
A food stall owner was preparing dough for making bhaturas
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0
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14143
|
March 24, 2018
|
Observe the figure given below carefully and answer the following questions.Which process is being tested in the activity?
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0
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5325
|
March 24, 2018
|
Observe the figure given below carefully and answer the following questions
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0
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2408
|
March 24, 2018
|
Paheli participated in a 400 m race competition held at her school and won the race
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0
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9591
|
March 24, 2018
|
Explain respiration in plants
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0
|
611
|
March 24, 2018
|
What facilitates opening and closing of stomatal pores?
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0
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805
|
March 24, 2018
|
Explain the process of breathing in fish
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0
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2282
|
March 24, 2018
|
How do frogs breathe on land and in water?
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0
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3554
|
March 24, 2018
|
What happens to the air we breathe in, once it reaches the lungs?
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0
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3066
|
March 24, 2018
|
Write the difference in the composition of inhaled and exhaled air
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0
|
1687
|
March 24, 2018
|
Explain the role of the diaphragm in the process of breathing
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0
|
1480
|
March 24, 2018
|
Insects and leaves of a plant have pores through which they exchange gases with the atmosphere
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0
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3694
|
March 24, 2018
|
Whenever we feel drowsy or sleepy we start yawning
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0
|
4419
|
March 24, 2018
|
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school
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0
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7072
|
March 24, 2018
|
On an average, an adult human being at rest breathes 15-18 times per minute
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0
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2651
|
March 24, 2018
|
Which gas present in air is essential for aerobic respiration?
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0
|
825
|
March 24, 2018
|
Describe the function of the heart
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0
|
25212
|
March 24, 2018
|
Distinguish between the following. (a) Excretion and Transpiration
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0
|
1737
|
March 24, 2018
|
Distinguish between the following.Arteries and Veins
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0
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2222
|
March 24, 2018
|
Draw a diagram of the human excretory system and label the various parts
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0
|
1773
|
March 24, 2018
|
Give an experiment to show the upward movement of water in plants
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0
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3283
|
March 24, 2018
|
While learning to ride a bicycle Boojho lost his balance and fell
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0
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6858
|
March 24, 2018
|