1. | pre-reproductive individuals are more than reproductive individuals. |
2. | reproductive individuals are less than post-reproductive individuals. |
3. | reproductive and pre-reproductive individuals are equal in number. |
4. | pre-reproductive individuals are less than reproductive individuals. |
What parameters are used for tiger census in our country's national parks and sanctuaries?
1. Pug marks only
2. Pug marks and fecal pellets
3. Fecal pellets only
4. Actual headcounts