Chapter 21 Lesson 1 Population
by Luiza Marques

1. Competition
1.1. Competition : is the demand for resources, such as food, water, and shelter, in a short supply in a community
2. Population Sizes
2.1. Changes in a environment can result in a population sizes changes
2.1.1. Limiting Factors :
2.1.1.1. Limiting Factor : is anything that restricts the size of a population. Ex - temperature
2.1.2. Measuring Population Size
2.1.2.1. Population density : is the size of a population compared to the amount of space available
2.1.3. Biotic Potential
2.1.3.1. Biotic Potential : is the potential growth of a population if it could grow in perfect conditions with no limiting factors
2.1.4. Carrying Capacity
2.1.4.1. Carrying Capacity : the largest number of individuals of one species that an environment
2.1.5. Overpopulation
2.1.5.1. Overpopulation : When the seize of a population becomes larger that the carrying capacity of its ecosystem. It causes problems to organisms