8. |
Most fish do not sink in water because of the presence of
- swim bladder
- air bladder
- air sacs
- air in spongy bones
|
A. |
I and II are correct |
B. |
II and III are correct |
C. |
III and IV are correct |
D. |
I, II, III and IV are correct |
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admin2021-01-10 13:19:562021-01-10 13:19:56Photosynthesis generally takes place in which parts of the plant?