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.
In fact, a recent Canadian study found that Chinese oolong had some of the highest levels of arsenic, lead and cadmium compared to the other types of tea studied â namely organic and regular green tea, organic white tea, and organic and regular black tea.lack tea is more oxidized than green, white and oolong teas, and is one of the most common teas consumed throughout the world. Unfortunately, studies have found that brewed black tea contains cadmium, lead and arsenic.