B) Use public transportation often
In the development of a terrestrial planet, the stage of differentiation when dense material settled to the core and less dense to the outer parts.
The stage of planetary differentiation<span> includes separating out different constituents of a </span>planetary<span> body and development into compositionally distinct layers.
</span><span>It is the organization of the Earth into layers.</span>
Answer:
I guess it is war and conflict
