Question

و
Glass is man made substance​

Answer 1

Answer:

Although most people think of glass as a man-made material, it is found in many forms in the natural world. Volcanoes spew molten rock, lightning strikes desert and beach sands, meteorites pound the earth, and sea sponges and microscopic organisms inhabit the waters.

I hope it help you....

Answer 2

Answer:

yes

Explanation:

glass is a man made substance