What is stronger than steel but cowers from the sun?

This is a good riddle. The answer is ICE, because ice can break things, even ships like the titanic and it also makes steel weak but when the sun comes it melts away so it’s cowers away.

Answer: The answer is Ice. Explanation: No doubt, Steel is very stronger. Machines and their parts are mainly made up of steel. In metals, the atoms are present in a lattice and they continue vibrating and this protect the metals(alloys) from braking(fracture). When the temperature is very down then atoms stops vibrating in the crystal lattice and the metal can break. Ice is not a metal but its a solid form of water and it could be stronger than steel because when steel(ships etc are made up of steel) comes in contact of ice the temperature decreases and stops the vibration of metal atoms in the crystal lattice and the steel breaks. So, it shows that Ice is stronger than steel. We know that melting point for ice is zero degree C. So, when the ice comes in contact to sun light it melts. In this regards, ice cowers from the sun. Hence, we could say that, Ice is stronger than steel but cowers from the sun.