Answer: Coronal Mass ejection-geomagnetic storm
Geomagnetic storm-aurora
Explanation:
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Superficially, the connection between the cell cycle and cancer is obvious: cell cycle machinery controls cell proliferation, and cancer is a disease of inappropriate cell proliferation. Fundamentally, all cancers permit the existence of too many cells.
Answer:
d. all of the above
Explanation:
The ectoderm, neural crest and underlying mesoderm have been implicated in the induction of the neural tissue.