Answer: I think it is true because there are fossils found in all different layers.
Explanation:
I am not completely sure, but I think it might be B, Migration out of a stage 3 or 4 country is higher than migration to it.
A Becuawe if you really think about it it’s A
Answer:
I believe picking new president
-cantidad de muertes anuales (causas naturales)
-cantidad de muertes anuales (causas no naturales)
-cantidad de inmigrantes anuales
-cantidad de emigrantes anuales