1. |
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en.wikipedia.org
https://en.wikipedia.org/wiki/Bivalvia
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Organic Keywords: 26,359,258
Organic Competitors: 968
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PPC Keywords: 20
PPC Competitors: 165
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2. |
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oceanservice.noaa.gov
http://oceanservice.noaa.gov/facts/bivalve.html
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Organic Keywords: 20,822
Organic Competitors: 854
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PPC Keywords: 0
PPC Competitors: 0
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3. |
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ucmp.berkeley.edu
http://www.ucmp.berkeley.edu/taxa/inverts/mollusca/bivalvia.php
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Organic Keywords: 14,350
Organic Competitors: 782
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PPC Keywords: 0
PPC Competitors: 0
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4. |
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britannica.com
https://www.britannica.com/animal/bivalve
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Organic Keywords: 900,351
Organic Competitors: 1,015
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PPC Keywords: 0
PPC Competitors: 63
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5. |
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dictionary.com
http://www.dictionary.com/browse/bivalve
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Organic Keywords: 950,804
Organic Competitors: 701
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PPC Keywords: 0
PPC Competitors: 275
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6. |
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paleo.cortland.edu
http://paleo.cortland.edu/tutorial/Bivalves/bivalvia.htm
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Organic Keywords: 208
Organic Competitors: 1,029
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PPC Keywords: 0
PPC Competitors: 0
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7. |
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bivalves.teacherfriendlyguide.org
http://bivalves.teacherfriendlyguide.org/index.php?option=com_content&view=article&id=19&Itemid=111
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Organic Keywords: 334
Organic Competitors: 0
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PPC Keywords: 0
PPC Competitors: 0
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8. |
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shells.tricity.wsu.edu
http://shells.tricity.wsu.edu/ArcherdShellCollection/Bivalves.html
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Organic Keywords: 262
Organic Competitors: 821
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PPC Keywords: 0
PPC Competitors: 0
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9. |
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jstor.org
https://www.jstor.org/stable/1303290
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Organic Keywords: 365,896
Organic Competitors: 1,208
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PPC Keywords: 1
PPC Competitors: 0
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10. |
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books.google.com
https://books.google.com/books?id=Osmh2wFmqxgC&pg=PA45&lpg=PA45&dq=the bivalve&source=bl&ots=tdEwFdAS13&sig=PYTuuauAHIvAM5mPIdZou8W484E&hl=en&sa=X&ved=0ahUKEwjc9dWRirnUAhUFxGMKHaFIAhw4ChDoAQghMAA
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Organic Keywords: 17,570,401
Organic Competitors: 812
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PPC Keywords: 2
PPC Competitors: 76
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