Unlike a population, an individual has:
1. | Birth and death | 2. | Birth rate |
3. | Death rate | 4. | Sex ratio |
In a pond, there were 20 lotus plants last year. If through reproduction 4 new lotus plants are added, the number of offspring per lotus per year would be:
1. | 0.2 | 2. | 0.4 |
3. | 2.0 | 4. | 4.0 |
The tiger census in our national parks and tiger reserves is often based on:
1. | Pug marks | 2. | Cub count |
3. | Area allocation | 4. | Collar position |