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:
b c and d are all right
Explanation:
you can include animals and humans and scared places. this is not prohibtied.
According to wiki,”a tone is produced either by mixing a color with grey, or by both tinting and shading” so it’d probably be d but honestly cannot tell if that’s supposed to grey or blue
Answer:
sub to me first i am clo-se to 60 subs Itzyoboiadriane ON GANG
Explanation:
