An individual has calculated her ecological footprint. what does this
calculation tell her?
o
a. the area of the soles of her shoes
b. the amount of land in her environment
o
c. the impact she has on the environment
d. the biological productivity of her environment
sub

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)