The main source of energy for tropical cyclones is the warm oceans in the tropical regions. To initiate a tropical cyclone the sea-surface temperature generally needs to be above 26.5Â°C.However, existing cyclones often persist as they move over cooler waters.eproduced with permission from BoM. The main source of energy for tropical cyclones is the warm oceans in the tropical regions. To initiate a tropical cyclone the sea-surface temperature generally needs to be above 26.5Â°C. However, existing cyclones often persist as they move over cooler waters.
Oolong tea contains caffeine. Caffeine works by stimulating the central nervous system (CNS), heart, and muscles. Oolong tea also contains theophylline and theobromine, which are chemicals similar to caffeine. Too much oolong tea, more than five cups per day, can cause side effects because of the caffeine.
Black tea-Black is the most robust of the tea varieties and can be brewed in truly boiling water, usually steeped for 4-6 minutes. Oolong tea-As to be expected, oolong tea falls between green and black. The best temperature is around 190F.But oolong should be steeped longer than black tea, for around 5-8 minutes. Green tea-You will need to be more gentle with your green teas. The water temperature should be around 150-160F and only steeped for 2-4 minutes. White tea-Another delicate tea that should be treated gently.lack tea-Black is the most robust of the tea varieties and can be brewed in truly boiling water, usually steeped for 4-6 minutes. Oolong tea-As to be expected, oolong tea falls between green and black. The best temperature is around 190F.