A population has more young individuals compared to older individuals. What would be the status of the population after some years?

1. It will decline

2. It will stabilize

3. It will increase

4. It will first decline and then stabilize

Which of the following would necessarily decrease the density of a population in a given habitat?

1. Natality> mortality

2. Immigration> emigration

3. Mortality and emigration

4. Natality and immigration