Yes, a transverse wave needs to travel through a medium, an electromagnetic wave does not.
Here is what I'm guessing:
In agriculture, crops and trees will have their roots firmly in the ground which will prevent erosion and vice versa with lumbering. Any kind of construction and building will have land be cleared so there will be room for development. This, in turn, will disturb and continue to erode the land.
DNA contains Deoxy ribose sugar. RNA contains ribose sugar. The DNA sugar contains one less molecule hence De-oxy.
Answer: Cup 2
Explanation: The color changed because the things around us and because I did the experiment to. Hope I Helped :p