Answer:
Stem cells are divided into 2 main forms. They are embryonic stem cells and adult stem cells. Embryonic stem cells.
d.viruses <em>i believe im bout 98% sure hope i help!!
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Explanation:
probably A but I'm not sure about it
Answer:
D. All three primary germ layers develop into some more type of nervous tissue
Explanation: All of the primary germ layers have specific nervous tissue development. a) Ectoderm - neuroectoderm (neural tube, neural crest). b) Endoderm develops into (among others): The digestive tract and its attached glands; the inner lining of some organs, such as the lungs, nervous tissue; epidermis . c) Mesoderm - notochord signals the ectoderm to develop the neural crest more
Answer:
it is because of the process during gastrulation ..