Test tasks, Grade 6, Atmosphere.

The text is in Russian. The task is to answer questions related to the atmosphere, weather, and related phenomena. Since there are no specific questions asked, and the provided text is a set of exercises, I cannot provide a specific answer. However, I can identify the topics covered in the text:

• Atmospheric pressure and its dependence on altitude and temperature.
• Air composition.
• Temperature variations and their causes (daily, seasonal, altitude).
• Vertical air movement and its relation to pressure.
• Atmospheric phenomena (e.g., fog).
• Weather forecasting elements.

If you have specific questions from this text you'd like answered, please provide them.