BRAINCAKEPopulation Size
A population is all the individuals of one species living in the same place at the same time. Its size changes as a result of four processes:
• birth and immigration increase population size
• death and emigration decrease population size
change in population = (births + immigration) − (deaths + emigration)
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
More in Populations and Sustainability
- Carrying Capacity
- Limiting Factors of Population Size
- Density-Dependent and Density-Independent Factors
- Predator-Prey Relationships
- Interspecific Competition
- Intraspecific Competition
- Conservation
- Preservation
All 17 lessons in Populations and Sustainability · All OCR A-level Biology topics