Which statement best describes gypsum's environmental impact?

• A. High carbon footprint
• B. Low carbon footprint
• C. Non recyclable
• D. Requires significant energy to mine

Answer: (B)

Gypsum’s environmental impact is best described by its relatively low carbon footprint, especially when you look at life-cycle energy and emissions. Natural gypsum is abundant and requires less energy to process than many other construction materials, notably cement. The calcination and grinding steps used to make plaster or drywall operate at moderate temperatures, so the energy demand—and the associated carbon emissions—are lower overall than cement production, which involves very high-temperature clinker formation.

Additionally, gypsum offers recycling advantages. Old drywall and gypsum products can be recycled into new plaster or used in other processes, and synthetic gypsum from power plants can substitute natural gypsum, reducing waste. This recycling potential further lowers the material’s environmental impact.

So the best fit is a low carbon footprint because gypsum typically consumes less energy over its life cycle and lends itself to recycling, unlike options that imply high emissions, non-recyclability, or heavy energy use in mining.