Is there a way in rhino to tell where polysurface isnt closed

Which of the following kinds of programs displays an online advertisement in a banner or pop-up window on webpages, email, or other internet service? e

If the polar bear were taken out of the food chain what would happen to the seal population the seal population would diminish the seal population would grow dramatically the seal population would stay the same the seal population would decrease slightly

Which text format is this, "the text is transcribed exactly as it sounds and includes all the utterances of the speakers. "?