When ice covers lakes, there is less oxygen to breathe, and most fish sink to the bottom. They remain very quiet but awake. Carp, however, flap their tails to cover themselves with mud and they go to sleep. When the lake ice melts and the oxygen levels rise they awaken.
Great Barrier Reef dying
Great Barrier Reef dying The Great Barrier Reef, Australia's most famous
natural wonder, is soon to be listed as endangered by the
Australian Conservation Foundation. Shrimp trawling, tourism,
mining and other human activities continue to kill the marine life
of the reef.
Cool Articles
