Does a stickleback reproduce internally or externally? Birds and reptiles reproduce by internal fertilization? Do birds fertilize their eggs internally or
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wiki.answers.com/Q/Do_birds_reproduce_internally_or_ext...
wiki.answers.com/Q/Do_birds_reproduce_internally_or_externally
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But exactly like mammals and reptiles, birds need to have sex in order to get offspring (not like salmon, which fertilize the eggs after they're laid). For a bird, there's no way to fertilize an egg after it's been laid. Internally, before he egg is laid. The rooster copulates with the hen and then her eggs are fertile.
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answers.yahoo.com/question/index?qid=20061011234326AAOv...
answers.yahoo.com/question/index?qid=20061011234326AAOvGzp
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ChaCha has the answer to this question: Do birds have internal or external fertilization Answer: All birds have internal fertilization.
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www.chacha.com/question/do-birds-have-internal-or-exter...
www.chacha.com/question/do-birds-have-internal-or-external-fertilization
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Being stressed can wreak havoc on the body, internally and externally and is very unhealthy. In your mind feel the cool breeze in the warm sun while you hear the pleasant sounds such as the ocean or the birds chirping.
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www.warriorfitnessworld.com/articles/2007/06/are_you_st...
www.warriorfitnessworld.com/articles/2007/06/are_you_stressed_out.php
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The female then pulls it into her cloaca where fertilization occurs internally. By contrast, caecilians and tailed frogs use internal fertilization just like reptiles, birds and mammals. The male deposits sperm directly into the female's cloaca via an Unlike other frogs they can not fertilize the eggs externally.
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www.amnation.com/vfr/archives/009763.html
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Vertebrate animals such as reptiles, birds and mammals, Only one sperm cell will fertilize one egg cell successfully. It is possible, however, for two sperms to fertilize two eggs. This will result in two offspring. This is not at all unusual in the animal world. Foxes give birth to litters of between four and...
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www.saburchill.com/chapters/chap0032.html
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One kind of fish fertilize internally and another externally. Earthworms and snails have simpler physical structures, yet they fertilize internally. But most species of fish fertilize externally. So if all living animals evolved from one parent, After that some amphibians turned into mammals, another branch into birds.
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matthew.hitechemall.com/english/evangelism/bibans/59ori...
matthew.hitechemall.com/english/evangelism/bibans/59orig1.htm
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Marketing, Communications, and Social Media Generalist. I write, edit, plan, interact, converse internally & externally, *and* know basic graphic design. You'd think I'd be tweeting more, what with the wedding planning overload (still have a year Strangely, I don't see a lot of social media stuff for wedding planning.
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freshwater bony fish; marine birds; and humans? Why is the excretory product of most aquatic animals ammonia whereas that of terrestrial animals is urea or uric acid? What are the advantages and disadvantages of each type of excretory product?
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www.gsu.edu/~bioslp/Biol2108/SG4.htm
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