1. Ecology - Populations

2. Ecology - Populations Population
All the individuals of a species that are in a given area at a given time.

3. Ecology - Populations Population Density
The number of individuals in a given area.

4. Ecology - Populations

5. Ecology - Populations Carrying Capacity
Refers to the size of a population that can live indefinitely in an environment without doing that environment any harm.

6. Ecology - Populations Density Dependent Factors
Factors that affect population that get worse as population increases.
Eg. Food, Water, Space, Predators, Disease, Parasitism

7. Ecology - Populations Density Independent Factors
Factors that affect population that do not get worse as population increases.
Eg. Fire, Storms, Earthquakes, Floods

8. Ecology - Populations Interspecific Competition
Competition for resources between individuals of different species.
Eg. Competition for food, water, space…

9. Ecology - Populations Intraspecific Competition
Competition between individuals of the same species.