Amniotic Sac as Space Suit
The most fundamental innovation is the evolution of another fluid-filled sac, the amnion. in which the embryo floats. Amniotic fluid has roughly the same composition as seawater, so that in a very real sense, the amnion is the continuation of the original fish or amphibian eggs together with its microenvironment, just as a space suit contains an astronaut and a fluid that mimics the earth's atmosphere. All of the rest of the amniote egg is add-on technology that is also required for life in an alien environment, and in that sense it corresponds to the rest of the space station with its food storage, fuel supply, gas exchangers, and sanitary disposal systems.
Notes:
For life to use to evolve onto land.
Folksonomies: evolution terrestrial
Taxonomies:
/technology and computing (0.288938)
/family and parenting/motherhood/pregnancy (0.170683)
/health and fitness/disease/cancer (0.128660)
Keywords:
Amniotic Sac (0.975378 (negative:-0.464778)), space suit (0.924844 (negative:-0.197642)), sanitary disposal systems (0.916536 (neutral:0.000000)), Amniotic fluid (0.812403 (negative:-0.268868)), fluid-filled sac (0.717906 (negative:-0.328715)), amniote egg (0.695187 (positive:0.365005)), amphibian eggs (0.636200 (neutral:0.000000)), real sense (0.635869 (positive:0.348674)), fundamental innovation (0.635138 (negative:-0.328715)), alien environment (0.588469 (positive:0.365005)), gas exchangers (0.588156 (neutral:0.000000)), original fish (0.571463 (neutral:0.000000)), food storage (0.560783 (neutral:0.000000)), fuel supply (0.559863 (neutral:0.000000)), space station (0.545349 (neutral:0.000000)), rest (0.379753 (positive:0.365005)), amnion (0.364566 (neutral:0.000000)), seawater (0.325465 (negative:-0.268868)), life (0.309551 (negative:-0.099773)), continuation (0.305680 (neutral:0.000000)), astronaut (0.305574 (positive:0.267136)), embryo (0.305501 (neutral:0.000000)), composition (0.281079 (negative:-0.268868)), land (0.269407 (negative:-0.464778)), evolution (0.263889 (negative:-0.328715)), amnion. (0.263540 (neutral:0.000000)), microenvironment (0.259965 (neutral:0.000000))
Concepts:
Amniote (0.957260): dbpedia | freebase
International Space Station (0.949799): dbpedia | freebase | opencyc | yago
Amniotic sac (0.888511): dbpedia | freebase | opencyc
Reptile (0.863733): dbpedia | freebase | opencyc
Earth (0.839591): dbpedia | freebase
Evolution (0.791407): dbpedia | freebase | opencyc
Amniotic fluid (0.778320): dbpedia | freebase
Atmosphere (0.758425): dbpedia | freebase | opencyc
History of Life