Zinc and petroleum would be the best aswer.
Explanation:
Tillage and other practices performed up and down field slopes creates pathways for surface water runoff and can accelerate the soil erosion process. Cross-slope cultivation and contour farming techniques discourage the concentration of surface water runoff and limit soil movement.
The pendulum was one of the greatest discoveries of Galileo, but remains that his claims are doubted by a few, if not many. There are some questions as to how Galileo proved his claims and theory about the pendulum and its properties which even drove some of the modern people to say that he was just acclaiming false assertions. Of course, Galileo had shared his ideas to his colleagues and might have been documented that he failed to demonstrate it mechanically. Though it is uncertain that he might have not attempted it, if he were to attempt such demonstration, then he might have gone to do the usual model for pendulums which is the tying of a heavy object to the other end and attaching the other end on a high place which would then suspend the heavy object mid-air. This is in connection that Galileo "tried it" with lead and cork.
Answer:
can you please translate it to English
