what are used for travel?
The Alps pogo sticks couches trucks and cars snow, ice, and rock seatbelts chemical messengers permeable walls
A B C D E F G H
Trucks and cars are vehicles.
trucks and cars are used for travel
what are used for travel? (A) The Alps (B) pogo sticks (C) couches (D) trucks and cars (E) snow, ice, and rock (F) seatbelts (G) chemical messengers (H) permeable walls