Answer: A. the mid-ocean ridges
Explanation:
The features that form the longest mountain range on Earth is the mid-ocean ridges and spans about 40,389 miles around the earth.
The mid-ocean ridge has about 90% of its system under the ocean. They are formed as a result of the movement of tectonic plates.
Answer:
The earth is made out of layers that separate according to their d<u>ensities.</u>
The density of each layer is affected by the <u>composition</u> of the material and the amount of <u>pressure </u>
it is under.
The thinnest and least dense layer is known as the <u>Crust.</u>
The layer under the most pressure is known as the <u>core.</u>
Such high amounts of pressure cause this layer to remain in a <u>Solid State of matter</u> even though the nickel and iron are at such a high temperature.
On the other hand, the outer core remains in a molten state of matter even though it is made out of the same materials as the inner core since there is not enough <u>pressure </u>to change it to a solid.
Explanation:
The above question now updated with the missing words provide information about how the compositional layers of the earth's crust are formed.
The three major determinants as already explained about how the layers have come to be are:
- Composition of Material
- Pressure on the material
- and their density
The Crust (which is the outmorst layer) comprises of more silica.
The Mantle is a combination of silica, magnesium, and iron.
The core is a combination of oxygen, nickel iron and sulphur.
Cheers
First, what is a nebula?
A nebula is a cloud of dust or different elements (remember, the Space is to a big extent empty)
A planetary Nebula is a kind of nebula that is specifically formed with ionized gas that was released and surrounds a red giant star.