It'S Our Earth, Book 8 (Rev. Edn.)

It'S Our Earth, Book 8 (Rev. Edn.)

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Fill in the blanks. a. Nitrogen is fixed by and . b. Fossil fuels contain fixed . c. In the water cycle, the water vapour in the atmosphere is due to : and . d. In an energy chain ... Explain the carbon cycle with the help of a diagram. What changes doanbsp;...

Title:It'S Our Earth, Book 8 (Rev. Edn.)
Publisher:Pearson Education India - 2009-09-01

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