Download presentation
Presentation is loading. Please wait.
1
Chapter 5 Populations 5-1 How Populations Grow
2
KWL What are three things you want to know about population growth?
What do you know about population growth?
3
How Populations Grow Characteristics of Populations
Three important characteristics of a population geographic distribution Density growth rate
4
Geographic Distribution
Geographic distribution, or range, is a term that describes the area inhabited by a population.
5
Population Density Population density is the number of individuals per unit area. The population of saguaro cactus in the desert plant community has a low density, whereas other plants in that community have a relatively high density.
6
Populations Growth Population Growth
Three factors can affect population size: Birth Rate-number of births Death Rate-the number of deaths the number of individuals that enter or leave the population. * Simply put, a population will increase or decrease in size depending on how many individuals are added to it or removed from it
7
Immigration & Emmigration
the movement of individuals into an area, is another factor that can cause a population to grow. Emigration the movement of individuals out of an area, can cause a population to decrease in size.
8
Word Origin Immigration is formed from the Latin prefix in-, meaning “in,” and migrare, meaning “to move from one place to another. If the Latin prefix e- means “out,” then which of the following means “migration out”? A.) emigration B.) migration C.) Immigration
10
Carrying Capacity Carrying Capacity
The number or the largest number of individuals that a given environment can support.
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.