What effect would building a highway have on an ecosystem?

Impacts on Terrestrial Habitats. The impacts of roads on terrestrial ecosystems include direct habitat loss; facilitated invasion of weeds, pests, and pathogens, many of which are exotic (alien); and a variety of edge effects. Roads themselves essentially preempt wildlife habitat.

Answer: Building a highway would ruin the ground below the road. and the cars would pollute the area because there would be lots of cars on the highway