A friend asks you to give her a brief description of the rain shadow effect. Your response is that the rain shadow effect is a phenomenon caused when Multiple choice question. A) dry air (without moisture) ascends a mountain and after it reaches the top descends the other side causing a rain cloud formation that can produce unusual shadows. B) warm air with moisture ascends a mountain and after it reaches the top and descends the other side it produces rain cloud formations. C) warm air with moisture ascends a mountain and as it nears the top the air is so heavy with moisture that the moisture is lost as rain or snow and as the air mass descends the other side of the mountain there is no moisture to release causing a rain shadow. D) warm air with no moisture ascends a mountain and as it nears the top the air is so heavy with moisture that it has picked up that it causes the air mass to descend the other side of the mountain releasing rain or snow causing a rain shadow.