Subject :NSO Class : Class 3
Subject :NSO Class : Class 4
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 6
Ans 1:
Class : Class 10
It will not be A because in first class lever the fulcrum lies between load and effort but in hammer effort lies between fulcrum and load
Ans 6:
Ans 13:
Class : Class 3
It's A, as in a hammer, the fulcrum, that is the place were the head of the hammer and rod of the hammer meet is in center, the load which is the nail is on one end and the effort we apply is on the other end
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 4
Ans 1:
Class : Class 8
The correct answer is C because if organism X wipes out all tadpoles in the community, then water insects' population grows with nothing to eat them. The small fish die because they have nothing to eat, and soon the big fish die too.
Ans 5:
Class : Class 9
Aarush , there will be not enough plants to feed so many water insects . So, at a particular time all plants will finish . So , there will be nothing left for the water insects so they will also die !
Ans 6:
Ans 9:
Class : Class 4
In the given food chain, tadpole feeds on water insect and in turn is eaten by small fish. If population of tadpole will decline with time then small fish population will also decrease as former is the food of later. On the other hand, water insect population will be positively affected because in the absence of predator prey population reproduces and flourishes.