Question

What is the ratio of the number 256:240

Answer 1

Answer:

Effects of Acid Rain on Buildings and Monuments

Limestone and marble dissolve in acids. The sand particles forming sandstone often are held together by calcium carbonate, which dissolves in acid. Granite, while much more resistant to acid, still can be etched and stained by acid rain and the pollutants it carries.

Step-by-step explanation: