This statue of leshan giant buddha in sichuan, china, is carved directly into the mountainside. the color and texture of the statue are constantly changing due to the pollutants from vehicles and industries nearby. what are the two main causes of the changes to the statute?

The correct answer to this question is letter "B.rainfall and chemical reaction."

Looking at the choices, 
A. wind and rainfall, C.rainfall and gravity, 
D.gravity and wind are natural phenomenon and we are not sure what's in the wind and rainfall.

B.rainfall and chemical reaction, E.wind and chemical reaction shows the reaction to the statue. It's more likely to be rainfall than wind.

Answergranulation;

Answerlife is suffering;