Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.

Remove Ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

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

Vocab 19.1

Understanding Populations

Population A group of organisms of the same species that live in a specific geographical area and interbreed
Population Density The number of individuals of the same species that live in a given unit of area
Dispersion In ecology, the pattern of distribution of organisms in a population
Birth Rate The number of births that occur in a period of time in a given area
Death Rate The number of deaths occurring in a period of time
Life Expectancy The average length of time that an individual is expected to live
Age Structure The classification of members of a population into groups according to age or the distribution of members of a population in terms of age groups
Survivorship Curve A graph of the mortality data of a population; indicates the probability that individuals will survive to any given age
Created by: GutzwillerL19