Another difference that can be seen between profession and occupation, is that the former is guided through certain ethical codes, and is regulated by a certain statute. Summary: 1. A profession needs extensive training and specialized knowledge. On the other hand, an occupation does not need any extensive training.
1. One of the confusing concepts of Earth structure is the distinction between chemical layering (crust, mantle and core) and mechanical layering (lithosphere, asthenosphere and mesosphere). The scale model illustrates all of these layers on a single diagram.ne of the confusing concepts of Earth structure is the distinction between chemical layering (crust, mantle and core) and mechanical layering (lithosphere, asthenosphere and mesosphere). The scale model illustrates all of these layers on a single diagram.
Earthâs outer layer is the lithosphere, which is a cool, rigid layer that includes the crust and the upper part of the mantle. The lithosphere is divided into pieces called tectonic plates. Below the lithosphere is the asthenosphere, which is a layer of the mantle that is made of very slow-flowing solid rock.elow the asthenosphere is the mesosphere, which is the lower part of the mantle. The mesosphere flows even more slowly than the asthenosphere. Figure 2 The Physical Structure of Earth Earthâs core has two layers. The outer core is a layer of liquid iron and nickel.