The answer is -2 because you divide the rise by run
Answer:
Agriculture yielded more food, which made denser human populations possible, thereby supporting city development. Farming led to dense, settled populations, and food surpluses that required storage and could facilitate trade. These conditions seem to be important prerequisites for city life.
Explanation:
1.The definition of “sustainability” is the study of how natural systems function, remain diverse and produce everything it needs for the ecology to remain in balance
2.Dubai
3.the United Arab Emirates (UAE), long plighted by extreme climate conditions and vast resource consumption, there is a new type of city cropping up amidst the sand dunes. These meticulously–and expensively–designed “sustainable cities” are touted as models for green development: examples of how, in an inhospitable environment, humans can live with minimal impact on the earth.