Answer:
Glass is the most common material used to construct lens elements, due to its good optical properties and resistance to scratching. Other materials are also used, such as quartz glass, fluorite, plastics like acrylic (Plexiglass), and even germanium and meteoritic glass.
Answer:
actin' would be the mistake, or maybe ain't
Explanation:
I hope this helps! Thanks!
Answer:
Rihts and duties are closely related and cannot be separated from one another .
Explanation:
Because the both go side by side, these are two side in the same coin.If the states gives right to life to a citizen , it also imposes an obligation on him not to expose his life to danger and to respect his eldders.
My best guess is deep, smooth, and, rectangular
