Which glasses are more eco-friendly,plastic or metal?

[Fisher]

I wonder Which is the more eco-friendly choice for eyeglasses: plastic or metal?

[Randall]

In my opinion, metal glasses would be more eco-friendly than plastic glasses. Even though both plastic and metal are mined, metal is a kind of material that can be recycled and reused. However, plastic cannot be recycled. So to the environmental protection, metal glasses are better than plastic glasses.

[Heath]

As we know, plastic is a common material that would do greatly damage to our environment and cause environmental pollution. While Metal is more biodegradable than plastic. So metal glasses are more eco-friendly than plastic glasses.

[Justus]

I think metal glasses are more eco-friendly. Metal material can be recycled and reused, but most plastic can't.