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Answer:
1. potash and urea
2.they r rich in plant nutrients were as natural fertilizer are not
3. artificial fertilizer are hamefull for soil,water
it let done water level and kill friendly microorganisms which prevent replenshin of soil
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1. NPK, urea
2. (a) They contain large amount of minerals.
(b) They are cheaper and easy to use.
(c) They are easily transportable.
(d) They are absorbed by the plants
quickly.
3. (a) Continuous use of fertilizer can
degrade the soil.
(b) They decrease the humus content of
soil.
(c) They can kill helpful microorganisms
present in the soils
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