Ramona's behavior reflects diffusion of responsibility. This term refers to the fact that individuals are less likely to do something and offer somebody help if they are located in large crowds. If they are surrounded by other people who are also not doing anything to help, these individuals are unlikely to do something about the problem either because they are hoping someone else will do it for them.
The Arabian Peninsula mostly consists of a hot, arid desert. There are no major rivers or lakes aside from a few seasonal wadis. This makes both agriculture and daily life incredibly difficult, since both require large amounts of water.
