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Put the following stages of development in order...

a. Blastocyst implants in uterus,
b. zygote forms,
c. heart begins beating,
d. lungs can breathe air,
e. sex organs become visible

User Kalamarico
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1 Answer

5 votes

Answer:

b,a,c,d,e

Step-by-step explanation:

User Davvv
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