Zusammenfassung der Ressource
Changes in Communities
- Changes in size
- Birth rate is the numbers of
births per, 1000 individuals
in a tiem period
- Death rate is the number of deaths
per 1,000 individuals in a certain
period
- Immigration means
moving into a population
- Emigration means
living a population
- Limits of population
growth
- Climate conditions such as temperature and the
amount of rainfall can limit the population groth
- Space is another limiting factors for populations, for
example some birds need nesting space if they dont
find it the birds cannot born
- Food and water are required to survive
because when wood and water are limited
suply they can be limiting factors