Describe the great barrier reef. why is this site considered one of the world's most important ecosystems?

The great Barrier Reef is a huge reef consisting of many life forms some of which have been undiscovered and it is also one of the last big reefs left in the world

The Great Barrier Reef is located off Australia’s eastern shore. The reef is 1,250 miles long and is made up of thousands of individual reefs. There are over 400 species of coral and hundreds of species of plant and animal life. A popular tourist attraction, the Great Barrier Reef is protected by the United Nations as a World Heritage site.

d. stage 4

explanation:

the existence of some kind of demographic transition is widely accepted in the social sciences because of the well-established historical correlation linking dropping fertility to social and economic development.[1] scholars debate whether industrialization and higher incomes lead to lower population, or whether lower populations lead to industrialization and higher incomes. scholars also debate to what extent various proposed and sometimes inter-related factors such as higher per capita income,lower mortality, old-age security, and rise of demand for human capital are involved.[2]