Which of the following would occur the earliest in the development of a human fetus?

Nervous system begins to control body functions

Organs in the digestive system form.

Bone replaces cartilage in the skeleton

The lungs begin rhythmic movement

Question

Which of the following would occur the earliest in the development of a human fetus?

 Nervous system begins to control body functions

 Organs in the digestive system form.

 Bone replaces cartilage in the skeleton

 The lungs begin rhythmic movement

anonymous · Answer

Just look on Wikipedia or find a Youtube video. It's a popular topic, so there's loads of information out there, much of it aimed at people who know nothing about science.

anonymous · Answer

I think it would be A though, do you know?

anonymous · Answer

I have my own guess as to what the answer might be, but I would suggest looking it up.