Science (Population)

Population

Group of organisms of the same species living in the same place at the same time

Population growth

What is the decrease or increase of population which changes over time because of births immigration deaths and emigration

Birth

Population increase when new individuals are born

Immigration

Population increase when organisms move into the population

Deaths or mortality

Population decreases when individuals die

Emigration

Population decreases when organisms leave population

Food water shelter space and mate

What are the five resources for living organisms to survive and reproduce

Carrying capacity

It is the maximum number of organisms that an ecosystem can support without damaging its resources depends on food water shelter and mates

Limiting factors

Conditions that restrict growth size

Density dependent factors and density independent factors

What are the two types of limiting factors

Density dependent factor

This type of limiting factor is where their effects become stronger as population size increases such as competitions diseases predation and parasitism

Density independent factors

This type of limiting factors is where it affects the populations regardless of their size example of these are typhoon drought flood earthquake and wildfire