Maybe there's an app for that? Some kind of time lapse app? Or maybe set up a magnifying glass or a crystal ball on a stand and a piece of paper under it. As the sun passes, it will might burn a line on the page. As to how you would read this line, you would need some kind of measurement system - maybe do a baseline the day before and use you watch to record start and finish times.
The northwest territory of the US has two major rivers that cross the western and southern boundary of the territory. The western boundary has the Mississippi River while the southern boundary has the Ohio River. The territory overall consists of six states.
Answer:
four most common soil erosion prevention are vegetation, geotextile, mulch, and retaining walls.
Explanation:
i looked it up but I'm not sure about other ways to prevent soil erosion
