|1 United States||46||37||38||121|
|2 Great Britain||27||23||17||67|
|8 South Korea||9||3||9||21|
What How Why
Rust forms on the surface of iron objects when they are exposed to the air. It is the product of a chemical reaction called oxidization. The more the object is exposed to the air, the more rapidly rust spreads.
Men's 4 x 400m Relay
Women's 4 x 400m Relay