I think it is the cell membrane, but there is a possibility it is the cell wall. I think the cell membrane is correct because the skin does allow certain things into your skin cells, such as water. Similarly, cell membranes allow certain things in the cell. The cell membrane basically acts as the security guard of the cell.
Answer:
Urban ecology
Explanation:
According to my research on city development studies, I can say that based on the information provided within the question It would be helpful if the group had a thorough understanding of Urban Ecology. This is because Urban ecology is the scientific study of the relation of living organisms with each other and their surroundings in the context of an urban environment. Which would give them lots of insight on reasons why the people settled where they did.
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20% of Black social issue by government sensex