Oolong tea, made from more mature leaves, usually have less caffeine than green tea. On the flip side, mature leaves contain less theanine, a sweet, natural relaxant that makes a tea much less caffeinated than it actually is. That is the theory, anyway.
The highest point in Asia is Mt. Everest which is 8,850 meters above sea level. And Asia's lowest point is the Dead Sea which is 400 meters below sea level.
Throughout Essential Humanities, the term Central Asia denotes all of the-stan nations except Pakistan (which is grouped with South Asia). One key region of Central Asia is northern Kazakhstan, whose climate is relatively wet (compared with most of the Middle East), giving rise to vast plains of wet grassland.