I think it would be because of the heat. (Swelling from the sun being on them for so long.) Hope I helped! :)
Put the metal with the non-metal and use the charges to figure it out
Explanation:
Transpiration: This is the evaporation of liquid water from plants and trees into the Earth's atmosphere. Nearly all water that enters the roots transpires into the atmosphere. Sublimation: This is the process where ice and snow (a solid) changes into a gas without moving through the liquid phase