I believe the correct answer is: material that the lens is
made from.
Lenses are engineered to have
specific focal lengths, besides the curvature of the two sides of a lens. The
focal range, the distance between your optic nerve and the retins in lens, of
the lenses is determined by the material that lenses are made from.
Answer:
I suppose that humans back then worried the same as we do with elections or political things, our current election with 2020 can be related back to most elections and how it affected people through stress.
Her middle name is Beth :)
