| [ A ] External structure of living beings |
|
| [ B ] Life present on the earth | |
| [ C ] Life present in the other layer of earth atmosphere | |
| [ D ] Life found in space and on other setallite. |  |
| [ A ] External structure of living beings |
|
| [ B ] Life present on the earth | |
| [ C ] Life present in the other layer of earth atmosphere | |
| [ D ] Life found in space and on other setallite. | |
| Answer : Option D |
| Explanation : |
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