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).

7 0

3 years ago

The constant, dynamic process of continual addition of new bone tissue (bone ____________ ) and removal of old bone tissue (bone

elixir [45]

Answer:

(Bone deposition),

(Bone resorption),

Remodeling

Periosteal ,

Nedosteal,

The compact bone,

Spongy bone.

Explanation:

The constant, dynamic process of continual addition of new bone tissue (bone deposition) and removal of old bone tissue (bone resorption) is a process called bone remodeling. This ongoing process occurs at both the periosteal (outer) and nedosteal (inner) surfaces of a bone.

It is estimated that about nedosteal of the adult human skeleton is replaced yearly. This process does not occur at the same rate everywhere in the skeleton. For example, the compact bone in our skeleton is replaced at a slower rate than the spongy bone.

5 0

3 years ago

What are the alternate energy sources that are starting to replace the use of coal in the U.S.?

morpeh [17]

Because if we use too much coal we are wasting fossil fuels and burning coal hurts the environment so the alternative energy sources provide clean energy

3 0

3 years ago

Read 2 more answers

How can water intake affect the volume and concentration of urine?

Alchen [17]

More water means more pee (theoretically). Pee is actually just garbage materials from the body (toxins). These color the urine. The more you drink, the more you have to pee and just pee clean because all toxins are out, or you have more water to take out the toxins, having less of it per let's say 0.5 l

3 0

3 years ago