The question is asking to choose among the following choices that states on what is necessary for a convection cell to be set up in fluid, base on my research, I would say that the answer would be letter C. Thermal gradient and changes in density. I hope this would help
The amount of silk increased
Natural rights
- Social contract
- Absolute government
- Separation of powers
- Representative government
Answer:
About 1600 bce and the later 15th century.