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July 29, 2015

Homework Help: Science

Posted by Anonymous on Tuesday, April 29, 2008 at 8:09pm.

What are two conditions thet must be met for sexual reproduction to occur?

Why is it important that only one sperm fertilizes the egg?

List the following stages of human debelopment in order.
(a)Blastula
(b)Zygote
(c)Fetus
(d)Gastrula
(e)Morula

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