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Earn 100

What is the composition of soil?
Important Questions on Nutrition in Plant
HARD

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Match Column A with Column B.
Column A | Column B |
. Nitrogen | i. supporter of combustion |
. Oxygen | ii. significant impact on temperature |
. Carbon dioxide | iii. used in metallurgy |
. Water vapour | iv. used to fill air balloons |
. Argon | v. absorbs infrared radiation |
. Helium | vi. the main constituent of proteins |

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Write the uses of following natural resource.
Soil

