Surveys can be easily edited or cloned to save time in creation.
Edit an existing unpublished survey
Click on the blue link of the survey name. This will open up your survey so that you can edit questions and sections.
Click on any section. Here you can edit the wording, remove the question or move the question up or down between sections.
To copy an entire survey in entirely and have the ability to edit, click on the 'clone' button.
This will make a full, unpublished copy of your survey that you can edit and change.