The Encyclopedia Americana, Volume 8Grolier, 1994 - Encyclopedias and dictionaries |
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Page 117
... species identify pro- spective mates of their own species , to help over- come behavioral barriers to mating , and to co- ordinate physiological preparedness for mating and successful reproduction . Meeting of Mates . Difficulties in ...
... species identify pro- spective mates of their own species , to help over- come behavioral barriers to mating , and to co- ordinate physiological preparedness for mating and successful reproduction . Meeting of Mates . Difficulties in ...
Page 272
... species ) . Order Notostraca ( tadpole shrimps ; 15 species ) . Order Cladocera ( water fleas ; about 425 species ) . Subclass CEPHALOCARIDA This is a recently discovered group of tiny shrimplike animals , the most primitive of liv- ing ...
... species ) . Order Notostraca ( tadpole shrimps ; 15 species ) . Order Cladocera ( water fleas ; about 425 species ) . Subclass CEPHALOCARIDA This is a recently discovered group of tiny shrimplike animals , the most primitive of liv- ing ...
Page 509
... species in the light of physical and cli- matic barriers between the ranges of the species , he found that different yet clearly related species occupied adjacent areas of a continent . For ex- ample , he noticed that South American ...
... species in the light of physical and cli- matic barriers between the ranges of the species , he found that different yet clearly related species occupied adjacent areas of a continent . For ex- ample , he noticed that South American ...
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