they are melted and sold as scrap metal
YES
Running hot water over a metal lid on a glass jar causes the metal to expand slightly due to the heat, which can help break the seal it has with the glass jar. This expansion makes it easier to twist the lid open.
No, it is not safe to put glass lids in the oven for cooking as they may shatter due to sudden changes in temperature. It is recommended to use oven-safe cookware with metal lids for oven cooking.
a bottle opener
Yes. Used on top of metal lids in in ground cooking pits.
As long as the lids hold water, and you keep washing them.
Place a pot of water - with the water a few inches deep - on the stove and bring the water to boiling or at least steaming and just about to boil. Keep the temperature just hot enough to keep the water boiling or steaming. Place the lids in the water for at least 1 minute (look on the box to see if the manufacturer has different instructions). Remove them with tongs one at a time as you need them. Do not allow the water to boil off to the point of exposing any of the lids.
You could use trash can lids, or your neighbor's cat for death metal, or any other kind of music for that matter. What kind of stupid question is that?
Alot of things can be thrown away like broken toys, metal scraps, chip packets bottle lids and more
Lids.
No, they do not have eye lids.