The address or "Uniform Resource Locator" (URL) of a web page is shown encircled with a red line. You can highlight this then copy and paste it into an email or document.
You can Add a "Bookmark" folder and save the address in there for future reference.
Give the bookmark folder a suitable name such as "Geology", click on it to select it, then highlight the URL and drag it to the folder. You can then add a note to remind you what is on that page.
Send this page address - CLICK HERE - to a friend !