Population Characters Age Structure Migration

Annual migration does not occur in the case of:

1. Salmons

2. Siberian crane

3. Salamander

4. Arctic tern

Geometric representation of age structure is a characteristic of:

1. Biotic community

2. Population

3. Landscape

4. Ecosystem

What type of human population is represented by the following age pyramid? 

1. Stable population
2. Declining population
3. Expanding population
4. Vanishing population