Chapter vocabulary review for science

ecosystem

all the living things and their physical environments within a particular area

community

all the populations in a particular area

immigration

the arrival of individuals from outside an area

carrying capacity

the largest population size that an environment can sustainably support

population density

the number of individuals within a population per unit area

sex ratio

the proportion of males to females in a population

habitat

the specific environment in which an organism lives

limiting factor

characteristic of the environment that restricts population growth

population distribution

how organisms are arranged within an area

population

members of a species that live in the same area

exponential growth

occurs when a population increases by a fixed percentage each year

species

a group of individuals that interbreed and produce fertile offspring