Answer:The brainstem has an ectodermal origin and is composed of 4 parts: the diencephalon, mesencephalon, pons, and medulla oblongata.
Explanation:
Answer:
Carlos Juan Finlay
He discovered that yellow fever is transmitted from infected to healthy humans by a mosquito.
B
If you're talking about what you should do with it:
You should do you; you be yourself and do what you want to do.
