Carpooling decreases the amount of cars used to travel to a place.
Car crashes also create traffic congestion and greatly disrupt travel for commuters.
Carpooling decreases the amount of cars and traffic congestion.
Carpooling does what to the amount of cars and traffic congestion?
[a] improve
[b] Riding a bike
[c] uncontrolled
[d] reduced heat
[e] stalls
[f] slows
[g] increases
[h] decreases