Which of the following produce the dense glassy ooze found in certain areas of the deep-ocean floor?

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#Question id: 5542

#XL - T Zoology

One stage of cleavage is the morula stage which is:

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#Question id: 5543

#XL - T Zoology

What is the purpose of the chorion in terrestrial vertebrate embryos?

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#Question id: 5544

#XL - T Zoology

Which embryonic membrane forms the commonly of the placenta?

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#Question id: 5545

#XL - T Zoology

The placenta functions as a(n):

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#Question id: 5547

#XL - T Zoology

 Cells that rove from somites form the

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#Question id: 5548

#XL - T Zoology

Vertebrate lungs are derived from