You may have a mouth ulcer if you have: 1  A painful sore or sores inside your mouth, on the tongue, soft palate (the back portion of the roof of your mouth), or inside your cheeks. 2  Sores in your mouth that are round, white, or grey in colour, with a red edge or border.
Perpetually moving minecart track. Works underwater and above. Upvote this! http://redd.it/m9zrx. If you are using this for survival, make sure you have air bubbles along the way (such as signs) so you can breath. Song: Rainy Day in Paris: http://www.newgrounds.com/audio/liste...
An underwater remotely operated vehicle (ROV) is a mobile robot designed for aquatic work environments. Remote control is usually carried out through copper or fiber optic cables. A human operator sits in a shore-based station, boat or submarine bubble while watching a display that shows what the robot sees..