Guang' an weather forecast the weather ahead

Answer: A: (1) The moisture carried in the warm and humid airflow is gaseous water vapor, which meets with cold air and lowers the temperature of the warm and humid airflow. When it is cold, the water vapor in the warm and humid airflow will liquefy into small water droplets and form rainfall.

(2) For artificial rainfall, there must be a lot of water vapor in the air. At this time, dry ice was thrown into the sky, sublimated and absorbed heat, which made the temperature drop, and the water vapor liquefied into small water droplets, forming rainfall.

(3) China is a country with serious water shortage, and it is the responsibility of every citizen to rationally utilize and protect water resources. Measures for rational utilization of water resources include: using drip irrigation or sprinkler irrigation to save water and reduce water evaporation during water delivery;

The measures to protect water resources are: turn off the tap at will to prevent water pollution; Prevent soil erosion, do not cut down indiscriminately, etc.