Describe some Ways that human actions can cause changes in an environment​

If a person built a bridge that didn’t have water holes under it than the other side of the river would drought and kill all animals depending on that sorce of water

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it