If voltage remains constant, what happens to the current if the resistance is increased ten times?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

What practical value did astronomy offer to ancient civilizations?