The Mississippi-Missouri-Ohio river system is the largest and most significant river system in the world.
The correct answer is - (1) rising expanding cooling condensation.
At first there's the evaporation of water, since the water vapor is less dense than the air it rises up and starts to expend as it goes further upwards in the atmosphere. Once it reaches the upper layers of the troposphere than the cooling process starts because the temperature is decreasing with the altitude. Because of the cooling the process of condensation will start taking place and thus the formation of clouds were the water vapor returns to liquid form and creates rain. The cycle repeats its self all the time.
Try using demos graphs to see it. there ed is an app and a website
Answer: Here is a few Gemini, Canis Major, Canis Minor , Orion Taurus.