Answer:
Outer core
Explanation:
it is the most liquidy of all the layers.
Your answer to this question Plateau
<span>
Basically, the meteor caused there to be an increase of Carbon Dioxide, and less oxygen in the atmosphere :P I really hope this helps
</span>
<span>Erosion by rivers is a main valley-forming
process; other processes, such as movement of the earth's crust and
glaciers, also have an important part in some cases. The rate at which a
river deepens its valley depends on several factors.</span>
