Can you guys please help me put this in order

The country in the world with the largest population is_?

Horizon a is also sometimes called a. topsoil b. subsoil c. bedrock d. weathered bedrock

How do hearths affect cultural diffusion? a. a hearth is the destination of cultural diffusion. b. a hearth divides a cultural region in two. c. a hearth is the beginning point of cultural diffusion. d. a hearth is the means of cultural diffusion. e. a hearth is the meeting point of two diffuse cultures.