an environment that provides the things a specific organism needs to live, grow, and reproduce

parts of the habitat that are living or were once living

nonliving parts of a habitat

a group of organisms that can mate and produce offspring, which grows up to mate and produce offspring

all members of one species living in a particular area

all different populations that live together in an area

a community of organisms that live in a particular area along with the nonliving parts

study of how organisms interact with each other and with their environment

the number of births per 1000 individuals in a given time period

the number of deaths per 1000 individuals for a given time period

moving into a population

leaving the population

an environmental factor that causes a population to stop growing or decrease in size

the largest population that an area can support

the role of the organism in its habitat

process that selects organisms that can better survive the environment

trait that allows an organism to survive and reproduce

the struggle between organisms to survive as they compete for the same resources

an interaction in which one organism kills another for food or nutrients

any relationship in which two species live closely together and at least one benefits

a relationship in which both species benefit

relationship in which one species benefits and the other is neither helped or harmed

a relationship in which one organism lives on, with, or inside another organism and causes it harm

consumer with specialized digestive structures adapted to eat only plants

consumers with specialized digestive structures adapted on eat only meat

consumers with specialized digestive structures adapted to eat both plants and meats

consumers that break down organic material and return nutrients back to the Earth

a type of carnivore that eats the remains of dead organisms