Answer: The different layers are a result of lighter parts (such as the continental crust) settling at the surface level and heavier parts (such as iron and nickel in the core) settling in the middle. The layers separate by density, otherwise known as compositional layering. The earth did not always have these layers, as it had to undergo cooling to form some of them (like the continental crust).
Answer:
Why don't you just look it up on google they have really good poems and you can change the words around so it's not plagiarism
Explanation:
When the moon appears to be shrinking it is said to be waning. Hope this helped!
