Advantages:
1. Durable
2. Strong
3. Low cost
4. Water and chemical resistant
5. Light
6. Cheap
Disadvantages:
1. nonrenewable source
2. Contributes greatly to pollution in the oceans
3. Plastic bags can suffocate
4. All plastics are petroleum based products. i.e. they come from oil
5. Produces a highly toxic fume when burnt
6. Most plastics end up in landfill or marine sources