The rest are dumped in landfills and can take up to 1,000 years to biodegrade.
From the dailyherald.com
Fact is that these bags don't biodegrade and aren't cost-effective to recycle.
From the toledoblade.com
Did you know that it takes about 1,000 years for those sneakers to biodegrade?
From the abcnews.go.com
The parts remain tough for the lifetime of the car, but biodegrade when composted.
From the newscientist.com
Most of these common cups will be as old as Methuselah by the time they biodegrade.
From the tennessean.com
This is generally harmless and the soakaway allows it to leach away and biodegrade.
From the guardian.co.uk
The result is tiny oil droplets that can biodegrade more quickly than a mass of oil.
From the cnn.com
Currently, a main concern regarding present PET plastic is its slow biodegrade rate.
From the theepochtimes.com
It is fortunate that when used in natural form it does appear to biodegrade quickly.
From the guardian.co.uk
More examples
Break down naturally through the action of biological agents; "Plastic bottles do not biodegrade"
(biodegradable) capable of being decomposed by e.g. bacteria; "a biodegradable detergent"
Biodegradation is the chemical breakdown of materials by a physiological environment. The term is often used in relation to ecology, waste management and environmental remediation (bioremediation). Organic material can be degraded aerobically with oxygen, or anaerobically, without oxygen. ...
(biodegraded) Subject to biodegradation
(biodegradable) Any material that can be decomposed by biological activity; capable of being decomposed by biological activity, especially by microorganisms
(biodegradable) Subject to degradation to simpler substances by biological action, such as the bacterial breakdown of detergents, sewage wastes and other organic matter.
A "biodegradable" product has the ability to break down, safely and relatively quickly, by biological means, into the raw materials of nature and disappear into the environment.
(Biodegradable) A material that will decompose into naturally occurring, harmless components with exposure to air, sunlight and/or moisture.
(Biodegradable) Substances which, when left alone, break down and are absorbed into the eco-system