Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account


normal and gradual changes that occur in species living in an area

pioneer species

first to inhabit an area

climax communities

a community of plants that is stable and undisturbed


large geographic areas that have similar climates and ecosystems

fresh water ecosystems

consists of rivers and streams


wet for most, if not al,l of the year

intertidal zones

revealed during low tide, and are covered during high


where fresh and salt water meet

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording