Answer: Option (B) and (F)
Explanation:
Pressure and Density, both are inversely proportional to the height.
The air molecules are mostly present near the surface because of its higher density and the gravitational force that forces them to accumulate near the earth's surface. And as we go up, these air molecules gradually decreases in number and their density also becomes very less, as a result of which the pressure and density both subsequently reduces.
Thus, the correct options are mentioned above, i.e the pressure as well as density both decreases with the increasing height.
Either repetition or quoting.
I hope this helps! :)
The Tang and Song dynasties are seen as two dynasties that brought progress, peace, and development of China and the people in China. They are successive dynasties, with Tang being the predecessor of the Song dynasty.
The Tang Dynasty managed to:
- expand the territory of China in Central Asia, Manchuria, and Korea
- reunited the country and brought peace and prosperity
- improved the infrastructure
- implemented examinations for higher positions in order to have only high quality people in the most important positions
The Song Dynasty managed to:
- continue what the Tang Dynasty was doing
- improved the relations and trade with other countries, significantly expanding both
Because Earth's outer core is liquid and S waves cannot travel trough liquids
