Study finds plastic exposed to the sun emit greenhouse gases

Dr. Royer and her team studied the gas emissions of various plastics, including polycarbonate, polypropylene, polystyrene, and low density polyethylene, when exposed to sunlight. They found that sunlight breaks down plastics, increasing the surface area exposed and thus the gas emissions. Notably, low density polyethylene continued to emit gases even in the dark after sun exposure.

What gases are released by plastics when exposed to sunlight?

• Carbon dioxide and nitrogen

• Oxygen and hydrogen

• Sulfur dioxide and ammonia

• Methane and ethylene

Which of the following plastics was NOT mentioned as being tested by Dr. Royer's team?

• Polycarbonate

• Polypropylene

• Polyvinyl chloride

• Polystyrene

What happens to plastics when they are exposed to sunlight?

• They become waterproof

• They become more durable

• They break down, exposing more surface area

• They change color

Which plastic was found to emit gases even in the dark after sun exposure?

• Polycarbonate

• Polypropylene

• Low-density polyethylene

• Polystyrene

What is the result of increased plastic surface area exposure to the sun?

• Decreased gas emissions

• Increased gas emissions

• Plastic becomes transparent

• No change in gas emissions