Question

How does the slope of land or direction of
plowing affect how water runs over the land?

Answer 1

Step-by-step explanation:

At one end of a contour the slope of the land will always be steeper than at the other. Thus when plowing parallel runs paralleling any contour the plow furrows soon deviate from a true contour. Rain water in these furrows will thus flow sideways along the falling "contour" line.