Air currents that blow east to west from the north and south poles are the ___? a. polar easterlies
b. trade winds
c. polar westerlies
d. jet streams

pls someone lmk i cant fail this

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

How many moles of potassium are needed to react completely with 12.8 moles of magnessium bromide?

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus