394. An Easy Riddle You Can Gang Up On

RIDDLE 394:

I’m a type of reaction, and even a store, when my supply is broken, you don’t get any more. A fence and a bike both share me, or I’m just something you wear – What word could I be?

Look for subtle clues in the background photo and the title.

OR Challenge Yourself With the Video Version of the Riddle – Multiple-Choice Answers – You Get 10 Seconds: