I believe it's B) freezing and thawing of water beneath the soil
Answer:
Over time people move to other places depending on their opportunities.
Explanation: If someone wanted to be a farmer they would settle down in a more fertile area where they can get more land. and someone who wants to be a lawyer or doctor would settle in a more busy area in the city.
Explanation:
development(Noun) The process by which a mature multicellular organism or part of an organism is produced by the addition of new cells. The organism has reached a crucial stage in its development. development(Noun) Something which has developed.
