There are 18 calories in 1 cup of sliced Yellow Summer Squash. Calorie breakdown: 8% fat, 67% carbs, 24% protein.
The four varieties of teas; oolong, white, green and black are all made from a common plant, Camellia Sinesis. Green tea undergoes an oxidation process but not fermentation while black tea undergoes both. Black tea is the most popular tea in the west. Green tea contains about 210 mg less caffeine than black tea.
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.