Science Environment Studies Chapter 1

Front 1

a behavior physical characteristic that allows an organism to live successfully in its environment

Back 1

adapations

Front 2

an organism that is killed and eaten by another organism

Back 2

prey

Front 3

the numbers of deaths in a population over a certain period of time

Back 3

death rate

Front 4

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

Back 4

primary succession

Front 5

a nonliving part of an organisms habitat

Back 5

abiotic factors

Front 6

the number of individuals in an area of a specific size

Back 6

population density

Front 7

a living thing

Back 7

organism

Front 8

the organism that a parasite lives in or on in a parasitism interaction

Back 8

host

Front 9

a colse relationship between two species that benefits at least one of the species

Back 9

symbiosis

Front 10

an environmental factor that causes a population to decrease

Back 10

limiting factor

Front 11

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

Back 11

ecosystem

Front 12

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

Back 12

secondary succession

Front 13

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

Back 13

habitat

Front 14

an interaction in which one organism kills another for food

Back 14

predation

Front 15

the number of births in an area over a certain period of time

Back 15

birth rate

Front 16

all members of one species in a particular area

Back 16

population

Front 17

a relationship in which one organism lives on or in a host and harms it

Back 17

parasitism

Front 18

a living part of an organisms habitat

Back 18

biotic factors

Front 19

a approximation of a number based on reasonable assumptions

Back 19

estimate

Front 20

the largest population that an area can support based on the amount of fesources

Back 20

carrying capacity

Front 21

the organism that benefits by living on or in a host in a parasitism interaction

Back 21

parasite

Front 22

the organism that does the killing in a predation interaction

Back 22

predator

Front 23

a process by which characteristics that make an individual more suited to its environment become a more common trait in a species

Back 23

natural selection

Front 24

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

Back 24

species

Front 25

the process in which organisms use water along with sunlight and carbon dioxide to make their own food

Back 25

photosynthesis

Front 26

entering a population

Back 26

immigration

Front 27

the study of how living things interact with each other in their environments

Back 27

ecology

Front 28

leaving a population

Back 28

emigration

Front 29

a relationship between two species in which one species benefits and the other is neither helped nor harmed

Back 29

commensalism

Front 30

the first species to populate an area

Back 30

pioneer species

Front 31

the role of an organism in its habitat, ot how it makes a living

Back 31

niche

Front 32

the struggle for organisms to survive as they attempt to use the same limited resources

Back 32

competition

Front 33

all the different populations that live together in an area

Back 33

community

Front 34

a relationship between two species in which both species benefit

Back 34

mutualism

Front 35

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

Back 35

succession