When speaking, we can pause or change the tone of our voices to indicate emphasis. When writing, we must use punctuation to indicate these places of emphasis. This resource should help to clarify when and how to use various marks of punctuation.
Vagaries of weather and regular flooding: Farmers learnt to control the floods and grew some of the most valuable crops like flax, barley, wheat, fruits and vegetables that helped the economy progress. But the climate in Mesopotamia was hazardous with temperatures during the summer months ranging from 110 to 130F. Nearly eight months in a year was characterized by very dry conditions with the edges of the rivers Tigris and Euphrates turning muddy brown.
The Yellow River(on the left) also known as the Hwang Ho/He river, runs east to south and carries yellow silt to its delta. The Yellow River is about 2700 miles (4350 kilometers) long. The Tigris and Euphrates river valley civilization(Mesopotamia) has the same climate as the Indus Valley civilization. In Mesopotamia there is an average temperature range of about 30-50 degrees fahrenheit, but in the summer temperature averages range from 110-130 degrees fahrenheit.