Sorry Marnie for taking so long to get back to you. Each Hub that you write does have it's own url. You can find it in the address bar for each one.
Better than that, if you go down to the bottom of each page you will find where it says "link to this page". If you are copying a URL to use as a hyperlink in a blog, email or another social website, use this feature. It tracks for you and for HubPages the traffic you bring it to that particular hub.
I hope this answered your question. Feel free to let me know if it didn't and I will try to be a little more timely in my responses.