The Earth's rocky outer crust solidified billions of
years ago, soon after the Earth formed. This crust is not a solid
shell; it is broken up into huge, thick plates that drift atop the soft,
underlying mantle.
The plates are made of rock and drift all over the globe; they move both
horizontally (sideways) and vertically (up and down). Over long
periods of time, the plates also change in size as their margins are
added to, crushed together, or pushed back into the Earth's mantle. These plates are from 50 to 250 miles (80 to 400 km) thick.
<span>Hanga Roa is the capital of Eastern Island </span>
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.
Sorry but your image might’ve crashed or something. Can you type out your question in the comments? I’d be happy to help
This is called species richness
