What to regions border transition zone in africa

answer; overt behavior;

hello

question:

when would a new household be started?

a.when the oldest male died

b.when a man and a woman married

c.when the house could not hold everyone

d.when a child was born

answer: us d when a child was born

hope this have a great day and brainlest

permafrost layer, it exists beneath a layer of soil, rock or sediment.