The side of a mountain facing away from the wind is known as the side.
a. dark
b. leeward
c. windward
d. steep

The side of the mountain that is not facing the wind is called the leeward side

b. leeward

Explanation:

This is also known as the shadow zone that is created by the orographic effects of the mountain as the winds that reach the other end of the mountain has a rainfall and the other side remains dry and the winds laden with raindrops are unable to move farther apart and hence most of the rain is caused by this reason n the western side and the eastern side experiences dryness and thus called as the leeward side.

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast. 

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.