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Posted by JT on May 4, 2008 10:56 PM | Permalink
who said they are different? they are the same.
May 6, 2008 4:12 PM
Scientist, there is a difference between an embryo and a fetus. I will give you a big hint: Think about the time--when does a zygote become an embryo? When does an embryo become a fetus? This is all about the process of development.
May 6, 2008 4:23 PM