I would say water or infrastructure but i think water because in some countries it is scarce
Answer:
Umm that's the first step in the scientific method. So the answer would be nothing.
Explanation:
When a passing a truck if you are in the rear of the truck but cannot get a visual on what could be ahead and you want to change lane just to pass it you should first get a visual if there is no car in the other lane to avoid collision and if you are passed by a truck you should not speed up and let the truck passed you to avoid accident
I think the answer is mayors court