The Great Barrier Reef is located off the northeastern coast of Australia. The barrier reef is the largest coral reef in the world and consequently is the largest living structure on the planet. Other types of reefs include fringing reefs and atolls.
Coral reefs are delicate ecosystems and are threatened by warming oceans brought on by present day global warming. Warming seas lead to coral bleaching; a phenomenon where corals release their symbiotic algae, turn white and die.
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If you are talking about the Declaration of Independence of the United States, then, the social contract that the government gets its power from the people is mentioned in the following excerpt: <em>"That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, — That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government..."</em>
Enlightenment thinker Thomas Hobbes was one of the thinkers that talked about the social contract.
Other Enlightenment philosophers such as John Locke also wrote about popular sovereignty.
Baron of Montesquious and Jean-Jaques Rosseau were other thinkers that proposed interesting ideas about the form of governments and people's rights, that influenced further independence movements and revolutions.
The term scarcity in economics refers to the fact that:
a. economic wants are limited and resources are abused
b. even in the riches country some people go hungry
c. no country can produce enough products to satisfy everybody's economic wants
d. it is impossible to produce too much of any particular good or service in a market economy
