The plural form of the word radius is <em>radii</em>.
I know it sounds weird, but this is correct. Adding <em>-s </em> at the end of the radius would make the word grammatically incorrect. This is because the word radius itself is a Latin word.
- Marlon Nunez
Basically its what the main verb is, so it would be turns because it turns cool and dry.
I would say flighty is the correct one<span />
Can you open it better because like I'm trying to read it I know it's about science but I can't really read all the words to help you with your question so please make another photo showing like a better picture of it please thanks