Respuesta :
1. "Used for herding and standing guard." ----> "Dogs" 2. "Used for clearing forests." ----> "Fire" 3. "Used for plows and weapons." ----> "Metal" 4. "Used to travel from one place to another." ----> "Wheel"
Dogs were used in pairs for herding and standing guard. The dogs are friendly helpers in several tasks for mankind, they provide protection and are excellent sheepdogs.
Both wheel and metal were used for clearing forests. Axes and other tools for cutting trees are made of metal.
Both fire and metal were used in making plows and weapons. There are plows made of wood, but usually they are made of metal.
Both wheel and metal were used to travel from one place to another. The building of transportation needs metal and many use weels.