Advertisement Upgrade to remove ads

Cards I made for my son who is distracted.


a group of cells that work together to perform a specific job in the body


when two or more tissues work together to perform a specific job

organ system

organs work together in groups to perform particluar jobs


anything that can live on its own


a single cell that lives on its own


organisms that can only exist only as a group of cells


a group of organisms that are the same kind and that live in the same area


two or more different populations living in the same area make up a community


the community and all of non-living things that affect it

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 above 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

NEW! Voice Recording