First, you will need to download a previous version of Prezi Desktop software for PC (we have version 4.2 available to download that works). Prezi Pro account comes with Prezi Desktop software so you can create Prezi presentations on your computer. You can get the software free for 30 days ...
Nasal mucus is a clear, sticky liquid that works as a filter to prevent unwanted particles in the air from entering your body through your nose. Mucus is a natural part of your body's defenses, but sometimes it can be produced in excess...