I think it is "the natural world". This is because i have read many things where it says that they have a deep respect for the land and the animals they kill. These things are part of the natural world. So i am pretty sure it is the natural world they have great respect for.
Since pathos is an emotional appeal to the audience. so in this case to convince someone to donate money for a park, you could tell them stories about children who do not have parks to play at or a vision of all of the happy children playing at the park. Really anything that is going to evoke some kind of emotion out of the reader/viewer
They feel as though the mans presence is ominous in a way, saying he's sullen would suggest he's viewed poorly by them
