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it varies greatly from a few hours to several years. depends on the substance, the envirument its in and the surrounding flora and founa

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Q: For how long are various biodegradable substances expected to last?
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For how long are various non-bio degradable substances expected to last?

Non-biodegradable substances can last forever. Some substances are slow to degrade, but they still degrade over time. Those that are non-biodegradable should not degrade, even over long periods of time.


How long biodegradable and non-biodegradable expected to last in your environment?

it will not degrade and will last for long


How long non-biodegradable substances last in your environment?

Non-biodegradable substances can last forever. Some substances are slow to degrade, but they still degrade over time. Those that are non-biodegradable should not degrade, even over long periods of time.


How long non biodegradable substances last?

Examples are plastics, metal and glass. Dangerous chemicals and toxins are also non-biodegradable, as are plastic grocery bags, Styrofoam (polystyrene), and other similar materials.


How long does it take for a aluminium can to degrade?

Aluminum is not biodegradable. and will last forever. Over a very longtime it may react chemically with other substances, similar to metal rusting, but the can will still be there in some form or shape.


How long is timber expected to last?

timber is expected to last at list 15-25 years.


How long does a crayon last before decomposing in a landfill?

Forever. Wax is non-biodegradable.


Are bones non biodegradable waste?

No, they are biodegradable. So far, there has been no "bones" recovered from the Titanic wreck site as all the bones are now dissolved in the sea water or eaten by various sea organisms. The same happens over time in the earth. In some special cases the bones mineralize by replacing their structure with other inorganic materials. these fossilized bones last a long time.


why are non biodegradable pollutants cosidered too be of greater concern today?

Non biodegradable pollutants are very difficult to breakdown. They last for hundreds of years in the environment and affect nature negatively for long periods


How long will non biodegradable substance last?

Some will last around 4.5 billion years - until the sun becomes a red giant and effectively swallows the Earth.


What are Critical components of fire danger index in south Africa?

Expected temperature, expected wind strength, expected relative humidity, last rainfall. Expected rainfall is not included.


How long do non-biodegradable waste substances last?

It should be noted that conventional plastics can be made biodegradable with the inclusion of a small amount of an additive that promotes biodegradation. It is then called oxo-biodegradable plastic. Read more at http://biogreenproducts.com . Many plastic disposable products are being introduced that can be biodegraded using oxo-biodegradable technology.