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efesto efesto
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6 years ago
The ectoderm will become
A) the arms and legs.
B) hair, the outer layer of skin, and the nervous system.
C) muscles, bones, and the circulatory system.
D) the digestive system and lungs.
Textbook 
Children: A Chronological Approach, Canadian Edition

Children: A Chronological Approach, Canadian Edition


Edition: 5th
Authors:
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fdr77fdr77
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6 years ago
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efesto Author
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6 years ago
You make an excellent tutor!
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Yesterday
Smart ... Thanks!
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2 hours ago
Thank you, thank you, thank you!
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