<u>Answer:
</u>
Depending on the data regarding the air quality indices, the changes can be chosen to be incorporated or not incorporated.
<u>Explanation:
</u>
- The change in the air quality indices and its effect on the national income would be needed to be devised correctly if it has to be incorporated.
- The data obtained on air quality is highly vulnerable to fluctuation based on the methods of data collection.
- As it is difficult to measure the impact of changed air quality indices on the economy, its incorporation in national income is also difficult.
I believe the answer is A. hope that helped
So the question is asking on which of the following choices are the reason why the Indus Valley civilization decline and base on my research, I would say that the answers would be A. The surrounding land was severely deforested , C. Irrigation made the soil salty and unfit for farming and D. <span>Disease reduced the population. I hope this would help </span>
Hey there,
Answer: C, borrow money.
Hope this helps :D
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