A material that can be harmful if not properly disposed of is hazardous.
Its commonly referred to as hazardous waste or toxic waste.
Use of disposable syringes and needles used in drug intake into the veins can be real risk and can pose a threat to others and are very harmful for the environment if not disposed properly.
Recycling reduces the waste in the environment. for example plastic or metal if disposed off as rubbish will end up in our earth, water or atmosphere as a pollutant and is eventually harmful for humans, animals or plants. On the other hand, when recycled the same material will be usable.
Before thermometers use to have mercury in them and they are not harmful unless they are used properly. Mercury is harmful when it is not disposed of properly and if it spills. It is not used very much because it poses a threat to human health and the environment. Now most thermometers have alcohol in them, they work just as well as mercury thermometers but are more safe to use in case the thermometer breaks.
window spray, bleach, dish soapand etc...
It can be expensive and harmful to the environment. ......
Gasoline should not be disposed of just anywhere. It can have harmful effects on the environment. Gasoline can also catch on fire. Gasoline can be recycled.
Conditions that make material harmful is that when it is used for harming/destroying/killing/polluting the environment and the people.
Motor oil is used to run cars. Cars add pollutants to the air when they are running. This is how motor oil can be harmful to the environment. It can also kill plants and animals if not gotten rid of properly.
You should not take any medicine, including docusate sodium after the expiration date. All medications should be disposed of properly when expired.
Yes and No - but it is not liquid mercury that is harmful to the environment it is a solid amalgam and is relatively harmless and meets the RoHS standards for hazardous substances, and is easily disposed of at end of life.