1.responsiveness to the environment
2.growth and change
3.ability to reproduce
4. Having a metabolism and breathing
5. Maintain homeostasis
6.being made of cells
7.passing traits onto offspring
Decomposer and scavengers
For humans, population density is the number of people per unit of area, usually quoted per square kilometer or square mile (which may include or exclude, for example, areas of water or glaciers). Commonly this may be calculated for a county, city, country, another territory or the entire world.
