Answer:
1. Swords (swords can help cut through thick grass and plants or to cut parts of a plant)
2. Bomb (this can be used to create a crater on land that can be substituted for a human made lake or pond)
3. A warning system (this can be used to prevent people from entering farming lands)
4. Gun ship (another model can be made that can spray pesticides on plants to prevent bugs)
If helped mark me the brainiest!! Plz!! If you need more examples comment!!
