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OCNG 251 Final Exam
Terms in this set (4)
Total number of catalogued species on Earth?
around 1.8 million
Total number of species on Earth estimated to be between:
3 and 100 million / most likely 6 and million
How many marine species are known?
228,445 (13% of the 1.8 mil)
Why are there more species on land than in the sea?
marine environment is more stable than the land environment, higher variability forces life to adapt and evolve
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