Answer: B
Explanation: the Tigris river was essential for trade and travel, the Tigris Euphrates river system was basically centered in Mesopotamia
Ans: There are a number of ways to produce hydrogen: Natural Gas Reforming/Gasification: Synthesis gas, a mixture of hydrogen, carbon monoxide, and a small amount of carbon dioxide, is created by reacting natural gas with high-temperature steam. Electrolysis: An electric current splits water into hydrogen and oxygen.
The answer is B
Systemized process of creating inventions
Answer:
He did not speak of god or beliefs
Hope this is right.
