MCQ
Which of the following is an artificial ecosystem
- ✓Rice-field
- BForest
- CGrassland
- DLake
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| S.No. | Column-I | Column-II | |
| A. | Amoebiasis | i | Teporema pallidum. |
| B. | Diphtheria | ii | Use only sterilized food and water. |
| C. | Cholera | iii | DPT vaccine. |
| D. | Syphilis | iv | Use oval rehydration therapy. |

Statement $2$: Father is not responsible for the sex of the child
$X-Y-Y$