Answer:
Water vapor is less dense than these heavy molecules; in humid air, water vapor takes up space that would normally be occupied by nitrogen and oxygen. Known as the "vapor buoyancy effect," this phenomenon renders humid air lighter than dry air of the same temperature, pressure and volume.
They needed access to bodies of water for trade
c. the emperor should ask family members to become involved in governing the empire
Answer:
c. Hierarchical environments where those at the top maintain the status quo out of self-interest.
Explanation:
This is usually the type of environments that give rise to revolutions. One of the most important factors in encouraging a revolution is the presence of inequality. Revolutions most often happen when a group feels disadvantaged and thinks that the system it is living under is unjust. For this to happen, you generally need the presence of a wealthier or more powerful group at the top. Moreover, this group must be exclusive, and interested in maintaining the status quo in order to benefit itself.