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NCERT TELUGU-BIO-GIO-CHEMICAL CYCLE-EXERCISE
- Water is important because -
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- element is the building block of proteins and amino acids.
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- The most abundant element in the earth's atmosphere is
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- All living things need nitrogen mainly for -
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- % of nitrogen is present in the atmosphere.
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- Dissolution of harmful substances, like SO2 and oxides of nitrogen to...
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- Atmospheric nitrogen occurs primarily in inert form as
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- Most atmospheric nitrogen is ‘fixed’ through processes.
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- Nitrogen can also be fixed as nitrates by -
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- Symbiotic nitrogen fixer is -
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- Free living organism is which fixes nitrogen is -
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- Rhizobium has symbiotic relationship with plants of family.
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- Nitrogen makes its way back into the atmosphere through a process call...
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- Nitrates are converted to nitrogen by a process of –
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- Carbon occurs in elemental form as -
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- The endoskeletons and exoskeletons of various animals are also formed ...
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- In gaseous form carbon occurs as –
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- CO2 makes up % by volume in air.
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- The main reservoirs of carbon are -
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- The fixing of carbon in biological form occurs in -
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