Answer:
Between 120 and 180 seconds
Erosion is caused naturally by water, wind or gravity, and accelerated erosion is caused by human use of land.
Answer:
False
Explanation:
Please see the attached file
It has to be D because the arrow will drop as it moves, if it were a gun, you'd lead the target so fire below it, but due to it being an arrow, you aim high not low. Also, they didnt specify how fast anything is, so you'd probably miss if you actually did it.