Why does the warm sinking air lead to deserts?

it in he Explanation

Explanation:

As air sinks over a mountain or higher terrain, it warms adiabatically. This warming adds to the already warm and dry conditions found at a desert. ... The subtropical high contributes to sinking air while local impacts such as air flow down from high to low elevations compresses the air even more.

shanghai

explanation:

after fierce fighting, the chinese armies were driven out of the shanghai area by the middle of november 1937. nanking (nanjing), the nationalist capital, fell in mid-december 1937, and the liquidation of that city and its inhabitants became known as the nanjing massacre.

mark brainliest!

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)