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- Algae (8082 bytes)
2: ...f organization that may have developed several times in the early evolutionary history of life on eart...
4: ...lular algae rely entirely on external energy sources and have reduced or lost their photosynthetic app...
6: ...o produce [[oxygen]] as a by-product of photosynthesis, unlike other, non-cyanobacterial photosyntheti...
8: ...as human food or are harvested for useful substances such as [[agar]] or fertilizer. The study of alg...
12: ...[[cytoplasm]], rather than in specialized organelles. - Great Barrier Reef (3888 bytes)
1: ...e of a part of the Great Barrier Reef. Photo courtesy of NASA.]]
3: ...ast [[Australia]]. It stretches over 2000 kilometres in length and can be seen from space.
5: ...er to see the Great Barrier Reef was [[Captain James Cook]] during his [[1768]] voyage. Cook discovere...
7: ...eral continental islands have been turned into [[resort]]s.
9: ...being]] in the world. In reality it is many colonies of [[coral]]s. - Sea anemone (3337 bytes)
1: {{Taxobox_begin | color = pink | name = Sea Anemones}}
10: ...subdivision | color = pink | plural_taxon = Families}}
14: ...s then moved by the tentacles to the mouth for digestion inside a central cavity.
17: ...mage:Sea anemone 4.jpg|thumb|250px|left|Sea anemones, Image provided by [http://classroomclipart.com C...
18: ...s inhabit tropical reefs, although there are species adapted to relatively cold waters, intertidal ree... - Coral (8108 bytes)
2: ...utrients via channels in the skeleton and are clones of each other, hence having the same DNA.
4: ...ed by spawning, with many corals of the same species in a region releasing [[gamete]]s simultaneously ...
7: ... world's 793 known coral reef-building coral species.
9: ==Coral types==
11: ...Rugosa|rugose corals]] and [[tabulate coral]]. These two groups went extinct at the end of the [[Pale...
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