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its harmful because when metal goes rusty it looses it power and then eventually the car will fall apart.
Harmful
It rusts
It rusts
No
That depends on what effect is desired; If you like to breathe, it is a useful gas; If you prefer that your car (or whatever) not be rusty (oxidized), then it is a harmful gas.
They may become unsafe to drive due to rust weakening parts of the car.
Friction can be harmful or helpful when driving, no matter what time of year. For instance it is helpful when breaking and it is harmful between bearing surfaces. The loss of friction between the tyres and the road during winter can be disastrous.
No Because If It Is Wrecked Like Its Missing Parts And Its Old And Rusty Then It Will Not Be Able To Be Sold
The car is safe due to the strength of the body. If it is rusty the strength goes away quickly. Also all the brake and steering parts are mounted to pieces that rust also.
Serious rust can compromise the strength of structural joints. Serious rust can also allow unwanted exhaust fumes enter the cabin area.
because of weathering