Your second and third questions are loose torpedoes on your own ship. They will sink you because they'll kill your focus. One question per research project is all you need or want. It establishes a conduit between your books and your writing hand without ever really engaging your brain. It also makes for a very dull paper.
Professors fall asleep over dull papers.
On the other hand, you could be analytical. Having read your sources and affixed your working knowledge firmly in your mind, you could engage your brain in finding a research question. This would certainly demand study of Erasmus, but it would go further. Now your have the makings of an approach that could contribute something fresh and exciting to the topic. You narrow this to focus on human values in society that can lead to ecological problems.