PDF chapter test TRY NOW
Fill in the blanks with the options given:
| Oxygen | Renewable | Colourless | Ecosphere |
| Moisture | 860 | Nitrogen | Venus |
| Oxygen | Biosphere | Energy | Blanket |
| Hydrosphere | Acidosis | Glycolysis | Outermost |
1. __________ gas is present in air at the rate of 20.95%.
2. Air also acts as an __________ source for all living things.
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