Why is the Great Barrier Reef most likely named one of the seven natural wonders of the world?

It is the largest single structure created by organisms and is the largest coral reef in the world.
It supplies natural chemicals that can be used to treat cancer and other diseases.
It is beautiful but difficult to find, so it is one of Earth’s best-kept secrets.
It is the only known structure that naturally purifies the oceans.

A

Explanation:

I may be incorrect, but the reason I think this is because the reef is so big that it can actually be seen from space. Therefore, I feel like that answer would make the most sense. I hope this helps!

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).