Question

students want to design a recycling program at their school that reduces the energy costs and environmental impacts of food packaging materials. they collected information about recycling different materials and made this chart.

energy savings using recycled material	environmental impact
recycled glass saves 21% of energy costs compared to glass made from sand.	a ton of carbon dioxide is not released to make new glass for every six tons of glass that is recycled.
recycled aluminum saves 94% of energy costs compared to aluminum made from bauxite ore.	recycling aluminum reduces the mining of bauxite ore and the pollution created by mining and smelting the metal.
recycled polystyrene saves 88% of energy costs compared to plastic made from oil.	air pollution is reduced by recycling polystyrene by preventing it from being burned in incinerators.

the students decide aluminum recycling fits their design criteria.

which information best supports this decision? choose two.

□ a. aluminum recycling reduces environmental degradation.
□ b. aluminum recycling is most likely to increase biodiversity.
□ c. aluminum recycling prevents the greatest amount of air pollution.
□ d. aluminum recycling has the greatest percentage energy reduction.
□ e. aluminum recycling has the greatest reduction of environmental impacts.

Explanation:

The students aim to reduce energy costs and environmental impacts. Recycled aluminum saves 94% of energy costs compared to aluminum made from bauxite ore, which is the greatest percentage energy - reduction among the materials listed. Also, recycling aluminum reduces the mining of bauxite ore and the pollution created by mining and smelting the metal, thus reducing environmental degradation. There is no information indicating it increases biodiversity or prevents the greatest amount of air pollution compared to other materials.

Answer:

A. Aluminum recycling reduces environmental degradation.
D. Aluminum recycling has the greatest percentage energy reduction.