The taj mahal in india is made of pure white marble. it is slowly losing its white color because of pollutants from vehicles and industries around it. the wear comes from acid rain. the taj mahal is an example of weathering a.) wind and gravity b.) ice and wind c.) rainfall and chemicals d.) wind and rainfall e.) chemicals and gravity

The correct answer is option C,  rainfall and chemicals

Explanation:

The visual signs of weathering of Taj Mahal includes bulging , cracking and chipping of marble stones . These are mainly due to the acidic rain (including harmful chemicals) that causes leaching of mineral impurities. The chemicals from the refineries near by the Tajmahal release pollutants like sulfur dioxide and nitrogen dioxide, which turns into acids such as sulphurous acid & nitric acid leading to the degradation of Taj Mahal.  

correct it is c.) b b

double the distance = divide strength by 4