Subject :NSO Class : Class 7
Subject :NSO Class : Class 7
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 5
Ans 1: (Master Answer)
Class : Class 1
D
If these toxic chemicals enter the nearby waterbodies, they cause the microalgae population in the water-body to grow uncontrollably, causing algal bloom. These algae lower the oxygen levels in the water and cause harm to aquatic life. Toxic chemicals mixed with soil and water are absorbed by food plants and they become unfit for consumption. Toxic chemicals in the soil will cause soil pollution and water pollution. They will not cause air pollution.
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Subject :NSO Class : Class 3
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 5
Ans 3: (Master Answer)
Class : Class 1
D
Ploughing the field(d)→Adding fertilisers to the field(b)→Sowing the seeds(e)→Irrigation of crops(a)→Spraying pesticides(c)
Ans 6:
Class : Class 8
How is Fig. (b) Adding fertilisers to field? https://www.sofolympiadtrainer.com/forum/user/467395 Pls. reply
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 6