Charcoal is the oldest drawing medium
Answer: I think A im not 100 percent because you did not give a picture to go off but yeah i think its a if it is please give me brainliest
Explanation:
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.
