asked 24.8k views
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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

1 Answer

5 votes

Answer:

b,a,c,d,e

Step-by-step explanation:

answered
User Davvv
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