D is the answer. I've learned about these things like slavery in my class before.
Answer:
Carbohydrates, or carbs, are sugar molecules. Along with proteins and fats, carbohydrates are one of three main nutrients found in foods and drinks. Your body breaks down carbohydrates into glucose. Glucose, or blood sugar, is the main source of energy for your body's cells, tissues, and organs.
There are only 4 reasons that the Indus River Valley may have ended but here they are.
<span>1.Aryans might have invaded </span>
<span>2.Drought </span>
<span>3.Indus River changed courses </span>
<span>4.Too much flooding and destroyed crops </span>
<span>----- </span>
<span>Well your wrong. How can there be a drought and excessive flooding? </span>
<span>The four reasons are: </span>
<span>1.) Aryan invasions </span>
<span>2.) Decreases in trade </span>
<span>3.) Recurring floods </span>
4.) Earthquakes and tectonic uplifts
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Actually, it is possible to have drought and flooding, just not at the same time, but that does not mean the first list is better.
<span>There is a link below to an article people can read to discover the latest official version of how the Harappan disappeared.</span>