Final answer:
Mohenjo-daro had a city sewage system. Grain was moved in wheeled carts pulled by oxen. The Indus Valley's irrigation system was destroyed by environmental factors. Turquoise was obtained from Afghanistan.
Step-by-step explanation:
Mohenjo-daro, one of the ancient cities of the Indus Valley Civilization, is known for having one of the first city sewage systems. The residents of Mohenjo-daro developed advanced drainage systems and built citywide drainage networks with covers for servicing, as well as indoor toilets that connected to the drainage network.
Grain was moved from the fields into the cities of the Indus Valley Civilization in wheeled carts pulled by oxen. This mode of transportation enabled the efficient movement of large quantities of grain.
The irrigation system of the Indus Valley Civilization was destroyed mainly by environmental factors such as floods, deforestation, and soil erosion, rather than invasions or natural disasters such as earthquakes or hurricanes. The overuse of irrigation and deforestation led to the decline of agricultural productivity and ultimately the collapse of the civilization.
Indus Valley traders would likely get turquoise from . The Indus Valley Civilization had extensive trade networks, and Afghanistan was a known source of turquoise, which was highly valued for its vibrant blue color.