What are the fundamental techniques used to achieve
perspective?

In areas where even the experts disagree; everyone has a right to his own opinion. i mean if answers aren’t given just like in lots of things; then it has to be just anyone’s opinion. is this dualism multiplicity relativism or commitment

What do the olmec colossal heads represent?

Where is the photographer’s signature generally located? centered at the top of the photograph on the side of the photograph in the lower right hand side below the photograph photographs are never signed