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 |