Which was a part of Sumerian farming and trading? Select all correct answers.

Question 2 options:

Levees held back the annual floods of the Tigris and Euphrates Rivers

Surplus barley and wheat could be traded for other things.

Lumber, stone, and gold produced in in Sumer could be traded for food.

50% because no one is smart enough to relize that money makes the world go round and 99% of the earth hates donald trump the other 1% is the republicans go figure right

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d

i think it's b or c hope this