Often audible as screeching, track friction is created in train stations from high-temperature metals and carbon dusts, two common railroad waste products, interact with the rail bed.
a. friction is created in train stations from
b. friction is created in train stations when
c. friction is created in train stations, and when
d. friction, created in train stations when
e. friction, created in train stations from
a. friction is created in train stations from
b. friction is created in train stations when
c. friction is created in train stations, and when
d. friction, created in train stations when
e. friction, created in train stations from








