What happens if the polar jet stream shifts to bring air from the north farther south

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

What is the relationship between the direction of motion of the balloon and the wind currents