Agene for disease resistance in fir trees is transferred to pine trees using modern dna technology. how might this be economically to tree farmers? a) abnormal pine tree growth would be eliminated. b) erosion of topsoil would no longer be a concern. c) pine trees would be safe from pine beetle attacks. d) more pine trees would live to maturity, increasing lumber output.

The answer is D, I just had this question.

Explanation:

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.