breannlowe2001 breannlowe2001

11-01-2020
Health

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In human pregnancy, which organ(s) form first and last?

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20alondra04 20alondra04

11-01-2020

First is the brain, spinal cord, and heart begin to develop. Then A blood vessel forms which will later develop into the heart and circulatory system.

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joannarules101 joannarules101

11-01-2020

The sperm is the smallest cell in human biology, but also one of the most complex. The egg meanwhile is the largest cell and similarly intricate.

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