C. be a social contract between citizens and their leaders.
Reindeer were domesticated almost 2000 years ago
It would be sonar i think
The answer is - adiabatic lapse rate.
Adiabatic lapse rate refers to the rate at which the air expansion cools. For the dry air it has the value of 9.8 degrees per kilometer. When the air that is saturated starts rising and cools, the process of condensation of water vapor begins, releasing latent heat in the process.
