Answer:
The crust size remains constant because the older crust is melted at subduction zones.
Explanation:
The crust is constnatly created on Earth, but the crust is constantly getting destroyed as well. This situation leads to the total size of the crust being roughly at the same level, or rather constant, as one side a new one emerges, while at the same time, on the other side it gets destroyed.
The vast majority of the new crust is formed where there are divergent plate boundaries. Here, a gap opens up between the plates that move away and magma is constantly rising to the surface and creates new crust. When it comes to the destruction of crust, it occurs at subduction zones. Here, one plate moves below another plate, and as it does it reaches the upper mantle where it gets melted and recycled because of the high temperatures and pressure.
interesting, the moon, the earth, the other things in reality is only a pratice for the real thing....
The option that is an example of a barrier in a diffusion process that slow or stop the spread of an innovation is the lack of infrastructure to support a new technology.
The process of geographic diffusion can be understood as the dissemination of ideas, people, culture, things, technology, diseases, etc., from one place to another.
As an example, globalization, which is an example of spatial diffusion, that is, it starts at a point of origin and is spread very quickly to other places.
Therefore, a barrier in a diffusion process that slow the dissemination of an innovation is the letter a. lack of infrastructure to support a new technology.
Learn more about geographic diffusion here:
brainly.com/question/2035730
The people and illegal transporting of goods if they wanna regulate trade
