Research shows that ultraviolet rays, especially those from reflected light, can cause sunburn damage to the cornea. the cornea is part of the eye.

what is the best way to combine the information in the two sentences?

The details about the statues, i believe, are that they're carved from blocks of igneous stone, many of them are partially buried under the ground which to preserve and protect them from the harsh environment on easter island, and many of the facial features have washed away. also, the most well-preserved one is at the british museum in london.these are just guesses from what i can see and what i think i read correctly. i'm sorry i couldn't be more .