Equilateral Triangle: A triangle with all the sides of same length is called equilateral triangle. Isosceles Triangle: A three-sided polygon with at least two sides of the same length is called isosceles triangle. Scalene Triangle: A three-sided polygon with no sides of the same length is called scalene triangle.
Scientists Declare The Great Barrier Reef Dead At 25 Million Years. The Great Barrier Reef is considered Australiaâs national treasure as it once was filled with marine life, amazing coral reefs, and crystal clear waters. The incredible Coral Sea Wilderness has been declared dead by scientists at 25 million years old â ending its years of struggle and illness. However, locals claim that the reports of its demise have been exaggerated and there is plenty of life left in the worldâs largest barrier reef.
The 2,300-kilometer (1,430-mile) Great Barrier Reef, off the coast of Queensland in northeastern Australia, is a natural wonder. It is home to a quarter of all species that exist in the world's oceans. In 1981, it became the first ocean region to be declared a UNESCO World Heritage site.ustralian scientists have calculated that the Great Barrier Reef, the earth's largest living organism, has lost half of its coral in the last 27 years, and coral death is only accelerating. One reason is that Australia feels the effects of climate change earlier and more strongly than elsewhere.