Are there any natural or man made threats to the Pantheon in Rome?

List of Man made materials and natural material?

• I need a list of 4 man made materials and 4 natural materials. and if you could give me a bit of information e.g what its made of.. if its strong ect.. :D

• Answer:

  crude oil- natural liquid used to make many things from petrol to making soap...and money wood-natural solid taken from trees used to build anything from houses to furniture but watch out for the big bad wolf iron- natural solid mined from the ground used for building strong structures and get rid of creases in my clothes sand- natural solid found in the ground and on shorelines around the world used to build or create glass, computer chips and sandcastles paper- man made solid made from wood used to write info on, draw or make fun airplanes nylon- man made solid made from oil to create my favorite dressing gown glass - man made solid made from heating sand used to store beer steel- man made solid made up mostly of iron that has been smelted down and other additives introduced to it before cooling used for building structures, even been used to build weapons and superman:)