Science Test 3

Front 1

organism

Back 1

a living thing

Front 2

habitat

Back 2

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

Front 3

biotic factors

Back 3

a living or once living part of an organism's habitat

Front 4

abiotic factors

Back 4

a nonliving part of an organism's habitat.

Front 5

species

Back 5

a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.

Front 6

population

Back 6

all the members of one species living in the same area.

Front 7

community

Back 7

all the different populations that live together in a particular area.

Front 8

ecosystem

Back 8

the community of organisms that live in a particular area along with their nonliving things.

Front 9

ecology

Back 9

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

Front 10

death rate

Back 10

the number of deaths per 1,000 individuals for a certain time period.

Front 11

birth rate

Back 11

the number of births per 1,000 individuals for a certain time period.

Front 12

immigration

Back 12

movement of individuals into a population's area.

Front 13

emmigration

Back 13

movement of individuals out of a population's area.

Front 14

population density

Back 14

the number of individuals in an area of a specific size.

Front 15

limiting factor

Back 15

an environmental factor that causes a population to decrease in size.

Front 16

carrying capacity

Back 16

the largest population that a particular environment can support

Front 17

natural selection

Back 17

the process by which organism that are best adapted to their environment are most likely to survive.

Front 18

adaptations

Back 18

an inherited behavior or physical characteristic that helps an organism survive.

Front 19

niche

Back 19

how an organism makes its living and interacts with the biotic and abiotic factors in its habitat.

Front 20

competition

Back 20

the struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time.

Front 21

predation

Back 21

an interaction in which one organism kills another for food or nutrition.

Front 22

predator

Back 22

the organism that does the killing in a predation interaction

Front 23

prey

Back 23

an organism that is killed and eaten by another organism in a predation interaction.

Front 24

symbiosis

Back 24

any relationship in which two species lie closely together and that benefits at least one of the species.

Front 25

mutualism

Back 25

a type of symbiosis in which both species benefit from living together.

Front 26

commensalism

Back 26

a type of symbiosis between two species in which one species benefits and the other species in neither helped nor harmed.

Front 27

parasitism

Back 27

a type of symbiosis in which one organism lives with, on, or in a host and harms it.

Front 28

parasite

Back 28

an organism that benefits by living with, on, or in a post in a parasitism interaction.

Front 29

host

Back 29

an organism that a parasite lives with, in, or on, and which provides a source of energy to a suitable environment for the parasite to live.

Front 30

succession

Back 30

the series of predictable changes that occur in a community over time.

Front 31

primary succession

Back 31

the series of changes that occur in an area where no soil or organisms exist.

Front 32

pioneer species

Back 32

the first species to populate an area during succession.

Front 33

secondary succession

Back 33

the series of changes that occur in an area where the ecosystem has been disturbed but where soil and organisms still exist.