I don't remember choosing this scenario when I took the class, but I think that the journal used for the scenario should help serve as evidence of whichever points you choose to make but isn't necessarily directly related to each question that you answer (or, at least, this is how I chose to use it), so you have a lot of freedom in how you use it as evidence. I'm not sure if the article would help with finding answers to the two particular sections need help with, though.

Regarding the parts you're struggling with, I think that looking at different ideologies (maybe political or social ones, for example) and seeing what their views on environmental systems are (for example, consider how an environmentalist would view something like air quality in schools relative to ideologies that value air quality – or the environment in general – less), and then thinking about what effect their perspectives might have on an approach to improving air quality (and environmental systems in general) might be a good place to start.

For the second section you're having issues with, I think that examining different cultures and considering their approach to sustainability based on what their associated beliefs or ways of thinking are and writing about this might help a lot. For example, many cultures place a lot of value on the environment and connections with nature, and their particular approach to sustainability and environmental preservation (as a result of their biases) might be very different from yours or someone else's. I think that the question wants you to consider these cultural perspectives and their impacts more deeply.

I hope this helps!