GIRL UNLOCKS HER BOYFRIENDS PH RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A Human. As an infant, a man crawls on 4 legs; as an adult he walks on two legs and as an elderly citizen he walks with a cane hence the three legs. Did you answer this riddle correctly?
YES  NO  

Your phone. Did you answer this riddle correctly?
YES  NO  

On shell phones! Did you answer this riddle correctly?
YES  NO  

Energy.

According to the laws of thermodynamics:

Energy can not be created nor destroyed.

Energy can be converted from one form to another (kinetic energy, heat, latent heat, potential energy, chemical energy, or electrical energy).

Energy can be transported from one place to another through conduction, convection, and radiation. Did you answer this riddle correctly?
YES  NO  

A tree! Did you answer this riddle correctly?
YES  NO  

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

Don't worry, they'll let you know. Did you answer this riddle correctly?
YES  NO  

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

Cool music Did you answer this riddle correctly?
YES  NO  

4Skin. Did you answer this riddle correctly?
YES  NO  

Your phone will keep crashing. Did you answer this riddle correctly?
YES  NO  

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

A conversation between two people on a cell phone. Did you answer this riddle correctly?
YES  NO  

Time. Did you answer this riddle correctly?
YES  NO  

Chess. Did you answer this riddle correctly?
YES  NO