Which of the following statements concerning plastics is correct?

The correct answer is: All of the above

• Plastic can be produced using materials other than oil. Although the main carbon source for modern plastic is crude oil, a variety of variations are made from renewable resources. Oil-free plastic is advertised as "biobased plastic" or "bioplastics."
• Wildlife suffers a direct and fatal consequence of plastic contamination. Each year, thousands of seabirds, sea turtles, seals, and other marine mammals die from consuming or being entangled in plastic.
• Plastic pollutes natural systems, including rivers and oceans, because it does not decompose naturally. Throughout the many stages of the plastic value chain, the production, usage, and disposal of plastics also produce a sizable amount of greenhouse gas emissions.