IM FLAT AS A LEAF BUT ROUND AS A RING WHEN RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A tree Did you answer this riddle correctly?
YES  NO  

I'm a tree. Did you answer this riddle correctly?
YES  NO  

Juan by Juan Did you answer this riddle correctly?
YES  NO  

A cell phone Did you answer this riddle correctly?
YES  NO  

Europe Did you answer this riddle correctly?
YES  NO  

A boxing ring. Did you answer this riddle correctly?
YES  NO  

The man has survived a nuclear holocaust. He has wandered the earth for months looking for another survivor, but cannot find anyone and so comes to believe that he is the only survivor. Out of loneliness, he decides to commit suicide by jumping out of a tall building. When he is falling and hears the phone ring, he realizes that he must have been wrong- there IS another survivor. He has a heart attack and dies. Did you answer this riddle correctly?
YES  NO  

With a pumpkin patch. Did you answer this riddle correctly?
YES  NO  

I'm falling for you. Did you answer this riddle correctly?
YES  NO  

A scent or smell. A scent is important to both humans and animals and both search for scents (for different reasons). A scent travels through the air to benefit humans and animals, again, for different reasons. Did you answer this riddle correctly?
YES  NO  

Sir Cumference Did you answer this riddle correctly?
YES  NO  

A penguin stuck in a revolving door. Did you answer this riddle correctly?
YES  NO  

Ohio Did you answer this riddle correctly?
YES  NO  

Look at the eyes of all the three images. The second one has eyes positioned at different places. This is why the second image is the odd one out. Did you answer this riddle correctly?
YES  NO  

Because there's no point to it. Did you answer this riddle correctly?
YES  NO