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The health effects of radon are harmful, and include an increased chance of lung cancer. Radon is a radioactive, colorless, odorless, tasteless noble gas, which has been studied by a number of scientific and medical bodies for its effects on health.
The average annual temperature of the sea ranges from 18.5 °C (65.3 °F) in September to 23.7 °C (74.7 °F) in February. [136] Sydney has an average of 7.2 hours of sunshine per day [137] and 109.5 clear days annually. [4] Due to the inland location, frost is recorded early in the morning in Western Sydney a few times in winter. Autumn and ...
The average temperature is 21 °C (70 °F) in January and 27 °C (81 °F) in July. The warm temperatures of the Caribbean Sea and the fact that Cuba sits across the entrance to the Gulf of Mexico combine to make the country prone to frequent hurricanes .