MCQOPTIONS
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| 1. |
Most fish do not sink in water because of the presence of Most fswim bladderair bladderair sacsair in spongy bones |
| A. | I, II, III and IV are correct |
| B. | II and III are correct |
| C. | I and II are correct |
| D. | III and IV are correct |
| Answer» D. III and IV are correct | |