article_snippet.sent: Rio's environmental secretariat has insisted that the latest incident is the result of a sudden change in water temperature. '
article_snippet.sent: The intense rains that happened last week and a rise in the sea levels led to a spike in the (sea) water entering the lake, causing a thermal shock,' Rio's environmental secretariat said in a statement, reporting that water temperature in the lake quickly fell by 4C.
article_snippet.sent: Rio's environmental secretariat has insisted that the latest incident is the result of a sudden change in water temperature .