Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Science

Populations and Communities

TermDefinition
organism A living thing.
habitat An environment that provides the things a specific organism needs to live, grow, and reproduce.
biotic factor A living or once living part of an organism's habitat.
abiotic factor a nonliving part of an organism's habitat.
species A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
population All the members of one species living in the same area.
community All the different populations that live together in a particular area.
ecosystem The community of organisms that live in a particular area, along with their nonliving environment.
ecology The study of how organisms interact with each other and their environment.
birth rate The number of births per 1,000 individuals for a certain period of time.
death rate The number of deaths per 1,000 individuals for a certain period of time.
immigration Movement of individuals into a population's area.
emigration Movement of individuals out of a population's area.
population density The number of individuals in an area of a specific size.
limiting factor An environmental factor that causes a population to decrease in size.
carrying capacity The largest populaton that a particular environment can support.
natural selection The process by which organisms that are best adapted to their environment are most likely to survive and reproduce.
adaptation An inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment.
niche` How an organism makes its living and interacts with the biotic and abiotic factors in its habitat.
competition THe struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time.
predation An interaction in which one organism kills another for food or nutrients.
predator The organism that does the killing in a predation interaction.
prey An organism that is killed and eaten by another organism in a predation system.
symbiosis Any relationship in which two species live closely together and that benefits at least one of the species.
mutualism A type of symbiosis in which both species benefit from living together.
commensalism A type of symbiosis between two species in which one species benefits and the other species is neither helped nor harmed.
parasitism A type of symbiosis in which one organism lives with, on, or in a host and harms it.
parasite The organism that benefits by living with, on, or in a host in a parasitism interaction.
host An organism that a parasite lives with, in, or on, and provides a source of energy or a suitable environment for the parasite to live.
succession The series of predictable changes that occur in a community over time.
primary succession The series of changes that occur in an area where no soil or organisms exist.
pioneer species The first species to populate an area during succession.
secondary succession The series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist.
Created by: abuddana
Popular Life Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards