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When Using Books for Research,an Online Catalog Will Allow You

question 35

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When using books for research,an online catalog will allow you to conduct a key word search to ensure the book is timely and relevant.


Definitions:

Zygote

The initial cell formed when a sperm cell fertilizes an egg cell, marking the beginning of a human's genetic makeup.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing fetus while removing waste products from the fetus's blood.

Outer Cells

In developmental biology, refers to the cells on the outer layer of a developing embryo, which contribute to the formation of the placenta and other structures.

Embryo

An early stage of development in multicellular organisms after fertilization and before becoming a fetus, characterized by rapid cell division and differentiation.

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