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.
Answer:
The Hadean eon represents the time interval between 4.6 billion to 4 billion years back. It is marked by the initial formation of the earth , right from the time of gathering and accumulation of interstellar dust particles and gases, and there was frequent collision between the planetesimals of relatively larger in size. The core and the crust formed and started to become stable and also gradually led to the formation and expansion of the ocean and the earth's atmosphere.
This is how the earth gradually started to form and develop and took the shape during the time interval between 4.6 billion to 4.2 billion years old, and where the oldest rocks found on earth is dated from about 4.2 billion years in the past.
It would probably be hail since big blocks of ice could easily break the power lines
Answer:
They have a choice whether to live in water or on land
Explanation:
since they can live on water and land they can choose where they live
