View Poll Results: Is Evolution a scientific fact?

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  • Yes!

    33 66.00%
  • No!

    13 26.00%
  • I don't know

    4 8.00%
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  1. #221

    How did invertebrates evolved into vertebrates?

    (As explained in layman's term by the University of California Museum of Paleontology)

    Evolutionary history of Vertebrates

    Vertebrates first evolved in the ocean. The invertebrate ancestors of vertebrates had gill slits, but these were used primarily for filter feeding; these organisms took up most of the oxygen they needed through the skin. As early vertebrates grew larger and developed bony scales or plates between their tissues and the water, they developed gills for taking up oxygen from the water. Gills are complex, highly branched and folded structures; this increases the surface area for taking up oxygen. Because water is heavier and more viscous than air, fish must pump water through their mouths, through their gill chambers, and out the gill slits. When you see an aquarium fish gulping water, or "making a gookie," you will also see the gill cover opening and the gills fluttering, as water is drawn over the gills and the fish breathes. Very active fish increase oxygen uptake by swimming rapidly, forcing water into the mouth and over the gills by a sort of "ramjet" action.

    With rare exceptions, vertebrates have two separate sexes. Most lay eggs and are said to be oviparous, but a number of fishes and snakes retain ther eggs in their bodies, and the eggs hatch internally. Such animals are called ovoviviparous. Many vertebrates, such as dogfish sharks and almost all mammals, have further modified the ancestral structures of the egg so that the embryo is not only retained inside the body of the female parent, but actively nourished through a special connection with the mother's body. This is known as being viviparous.

    To know more about the fossil record, systematics, morphology, ecology of vertebrates visit Introduction to Vertebrates

  2. #222
    Quote Originally Posted by brownprose View Post
    How did invertebrates evolved into vertebrates?

    (As explained in layman's term by the University of California Museum of Paleontology)

    Evolutionary history of Vertebrates

    Vertebrates first evolved in the ocean. The invertebrate ancestors of vertebrates had gill slits, but these were used primarily for filter feeding; these organisms took up most of the oxygen they needed through the skin. As early vertebrates grew larger and developed bony scales or plates between their tissues and the water, they developed gills for taking up oxygen from the water. Gills are complex, highly branched and folded structures; this increases the surface area for taking up oxygen. Because water is heavier and more viscous than air, fish must pump water through their mouths, through their gill chambers, and out the gill slits. When you see an aquarium fish gulping water, or "making a gookie," you will also see the gill cover opening and the gills fluttering, as water is drawn over the gills and the fish breathes. Very active fish increase oxygen uptake by swimming rapidly, forcing water into the mouth and over the gills by a sort of "ramjet" action.

    With rare exceptions, vertebrates have two separate sexes. Most lay eggs and are said to be oviparous, but a number of fishes and snakes retain ther eggs in their bodies, and the eggs hatch internally. Such animals are called ovoviviparous. Many vertebrates, such as dogfish sharks and almost all mammals, have further modified the ancestral structures of the egg so that the embryo is not only retained inside the body of the female parent, but actively nourished through a special connection with the mother's body. This is known as being viviparous.

    To know more about the fossil record, systematics, morphology, ecology of vertebrates visit Introduction to Vertebrates
    claims ra ang akong nabasahan...jumping into conclusions...asa ra ang proof nga ang invertibrates ni evolve into vertibrates?
    Last edited by Pein; 09-25-2009 at 05:11 PM.

  3. #223
    Quote Originally Posted by Pein View Post
    claims ra ang akong nabasahan...jump into conclusions...asa ra ang proof nga ang invertibrates ni evolve into vertibrates?
    pataka man lang ka oi..
    basa sa lagi..

  4. #224
    Quote Originally Posted by Pein View Post
    ang kanang tawo nga naay resistant sa usa ka sakit, dont tell me ni evolve pud na siya...
    YES (note all caps and bold) --> you are evolving pien right this very moment via natural selection and genetic drift down at the gene level. This has been proven thru changes in our alleles frequency.

    Trivia pien...Don't you know that from Homo sapiens we have evolved to Homo sapiens sapiens, pien?

  5. #225
    Quote Originally Posted by Pein View Post
    claims ra ang akong nabasahan...jumping into conclusions...asa ra ang proof nga ang invertibrates ni evolve into vertibrates?
    basaha lagi ang links kay aa didto ang systematics and morphology then come back to me kung wa ka kasabot

  6. #226
    Quote Originally Posted by Pein View Post
    lisod jud kaayo sabton kay wala man gud moy actual testing nga nakakita jud mo nga ang invertibrates ni evolve into vertibrates diretso man mo sa conclusion. nganong naka conclude man mo ana? basin diayg lain na siya nga specie wala jud mu evolve...
    hoy..

    it will take a long period..

    ayaw lagi pataka..


    unsa man imong pagsabot anang evolution? mobutho dayon kung gusto nimo?

    ayaw lagi'g pataka dha..


    balik sa nursery kay dili pa ka dapat sa kinder II..

  7. #227
    Quote Originally Posted by brownprose View Post
    YES (note all caps and bold) --> you are evolving pien right this very moment via natural selection and genetic drift down at the gene level. This has been proven thru changes in our alleles frequency.

    Trivia pien...Don't you know that from Homo sapiens we have evolved to Homo sapiens sapiens, pien?
    kung ni evolve ang usa ka tawo nga naay resistant sa sakit, nganong wala man lagi mu evolve into another kind of specie tawo raman gihapon? just like sa giingon nimo nga bacteria nagpabilin raman gihapong bacteria wala mu evolve into another kind of specie.

  8. #228
    Quote Originally Posted by brownprose View Post
    basaha lagi ang links kay aa didto ang systematics and morphology then come back to me kung wa ka kasabot
    nakabasa naman ko wala man ko nakabasa kung giunsa pag evolve sa invertibrates into vertibrates...jumping into conclusions raman gihapon...

  9. #229
    Quote Originally Posted by Pein View Post
    kung ni evolve ang usa ka tawo nga naay resistant sa sakit, nganong wala man lagi mu evolve into another kind of specie tawo raman gihapon? just like sa giingon nimo nga bacteria nagpabilin raman gihapong bacteria wala mu evolve into another kind of specie.
    sa ako ng gikasulti, it will take a certain period for an evolution to occur.
    naay process ba.

    mao nay akong pagsabot.


    sampol sa evolution;

    si pein cge'g tini-il

    1. abtan ug pila ka semana, nakublan na intawn ang ti-il ni pein
    2. pas-pas na cya molakaw
    3. kinahanglan na cyang magpa-foot spa

    ergo;

    sa number 1 pa lang pein, tataw na kaayo nga naay kausaban sa imong lawas.
    nakublan ang imong ti-il.
    mura'g adaptation tingali ang tawag ana.

    unsa may gusto nimong mahitabo pein kung cge ka'g tini-il?
    tugkan ka'g pako? tugkan ka'g sungay?


    pastilan, sulod sa nursery sa dong. dili pa ka angay sa kinder II..

  10. #230
    Quote Originally Posted by Pein View Post
    nakabasa naman ko wala man ko nakabasa kung giunsa pag evolve sa invertibrates into vertibrates...jumping into conclusions raman gihapon...
    aw, dili diay ka motu-o'g conclusion?

    therefore, pein is peticantropus africanus. excuse my french.

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