We can not answer your question because different countries assign different agencies with this responsibility and you have not made it clear which country you are asking about.
The main effect is the stone decay, which cam be divided into specific types of degradations: - black crust ( the black layer on the surface of the stone) that can cause chemical reactions that lead to the stone defragmantaion - salt efflorescences that can also induce a certain strength inside the stone, causing the stone to defragment.......... an so on... You can find a lot more informations in some related papers on the World Wide Web.
The ancient Egyptians used Brick and Stone to build their monuments and pyramids, which still stand today at around 5000 years old.That is true.BUTModern day monuments are made out of Granite, Marble, and other strong, nice~looking materials.
raskal monuments
Historic monuments, art and science
Despite efforts to seal, cover, or otherwise protect rock based monuments from weathering and erosion will ultimately be futile in geologic terms. Whole mountain ranges have been flattened over time by natural forces, and eventually manmade monuments will suffer the same fate.
the role of goverment in preventing historical monument and sites in guyana
There is not an exact known number, but there are LOTS of historical monuments. Practically every part of Europe has its own historical monuments.
What are the benefits of historical monuments and sites in guyana
There are many historical monuments. Taj Mahal is one of the best in the world.
Royal Commission on the Historical Monuments of England ended in 1999.
do's and don'ts at monuments
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The cast of Respect Historical Monuments - 2010 includes: Subhagata Bhattacharya
Tourism is the main reason. It brings money into the Country.
to avoid pollutions
there is a lottt of imp..
bob marley