Amazon Quiz: This is the world’s largest single structure made of which living organism?

A. Coral Polyps

B. Abalone

C. Conch

D. Hake

Answer: Coral Polyps.

The Great Barrier Reef is the world’s largest single structure made from living organisms and can be seen from outer space. It is composed of billions of tiny organisms known as coral polyps. 

It the world’s largest coral reef system, comprising over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres (1,400 miles) over an area approximately 344,000 square kilometres (133,000 square miles). 

It is located in the Coral Sea, off the coast of Queensland, Australia. It supports a vast diversity of living organisms and was in the year 1981 selected as a World Heritage Site. A large part of the reed is protected by the Great Barrier Reef Marine Park, which helps limit human use such as fishing and tourism. 

The reef is facing various threats, including climate change, runoff, coral bleaching, among others, with studies showing the reef has already lost half its coral cover from 1985. 

The reef has long been known to and used by Aboriginal Australian and Torres Strait Islander people and is an important part of the culture and spirituality of local people. It is also a major tourist destination, particularly in the Whitsunday Islands and the Cairns regions. The reef is an important economic activity in the region, helping generate AUD $3 billion in revenue each year. 

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