D. because the statue has a new chemical called patina. It is no longer copper.
Silicon is used in the manufacturing of microchips and is also used in motherboards. We use it in our daily lives. It is a high tech element.
It's angle of reflection must be 41 degrees
we know, by the first law of reflection that angle of incidence is always equal to angle of reflection..........
If iron were used to make coins then it would rust easily,because of its exposure to water, air etc..
