Fact 1: Awarm front causes cloudy and rainy weather.

Fact 2: Warm air moving into an area of cold air is called a warm front .

Given the two facts above, answer the question "What causes cloudy and rainy weather?" with the following options: 
- Cold air forming fog
 - a hemisphere is tilted away from the sun
 - Warm air near the oceans
 - Breathing too fast or too slow
 - Cold winds near the mountains
 - Warm air moving into cold air
 - Earth's axis of rotation is tilted
 - extreme heat and pressure


 

      Warm air moving into cold air   