Answer the following question given this paragraph: 

Much of the trash in the oceans is plastic. Many types of plastic do not degrade. Some break down into plastic molecules, but these can also be a pollutant. Plastic shopping bags are extremely abundant in the oceans. Since water runs from land into the sea, chemicals can end up in the sea. Pesticides, herbicides, and fertilizers are among the chemicals.


Q: Most of the trash in the ocean is made of what material?


A:
plastic