Answer:
Formaldehyde can be added as a preservative to food, but it can also be produced as the result of cooking and smoking. Formaldehyde also occurs naturally in the environment. Humans and most other living organisms make small amounts as part of normal metabolic processes. Formaldehyde is also a byproduct of combustion. When burning natural gas, kerosene, gasoline, wood, or tobacco, formaldehyde is produced. Automobile exhaust is a common source of formaldehyde in our environment. Tobacco smoking in the home is another source of the chemical in the indoor environment.
Explanation:
In general when they need to get done with their basic requirements or their needs they fight for that if the authority didn't respond proply..
sequence like salary incresment.
then the Labour union strikes to win their requirement.
Well they tried to build more jobs to put people into business but they ended getting layed off because they couldnt afford to pay for their workers and they failed because more and more people lost there jobs
