Describe industrial and domestic processes where materials or products are recycled for a different use.
Explain why recycling is an environmentally and economically viable strategy, cutting down the use of limited material resources, energy usage, and waste production.
Describe how metals can be recycled by melting them down and recasting or reforming them into new products.
Understand that the amount of separation required for recycling depends on the material type and the desired properties of the final product (e.g., adding scrap steel to iron in a blast furnace).
Evaluate the various factors that affect decisions on whether to recycle a specific product or material, given appropriate contextual information.
