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zoogeography
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The study of the distribution of animals on the surface of the globe.
Ãâó: nandankanan.tripod.com/scienceterms.htm
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zoonoses
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A disease that is transmissible between humans and animals.
Ãâó: www.biotech.ca/EN/glossary.html
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zona pellucida
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the outer membrane of a human egg.
Ãâó: www.sbivf.com/glossary.htm
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zona pellucida
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The outer covering of the ovum that the sperm must penetrate before fertilization can occur.
Ãâó: www.ivf.org/glossary.html
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zooplankton
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a diverse group of small protists and animals, such as tiny crustaceans, that serve as food for larger freshwater and marine invertebrates.
Ãâó: www.pen.k12.va.us/VDOE/LFB/glossary/w_x_y_z.html
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