Answer:
The photosphere, the chromosphere and the ionosphere.
Explanation:
You did not list any layers in your question, however, the sun is composed of mainly 6 layers;
- The core
- The radiative zone
- The convective zone
- The photosphere
- The chromosphere
- The corona
The photosphere is the visible layer of the sun, however, it is very bright even when viewed with a telescope. A filter has to be used to reduce the intensity of the light. This filter is called a myler filter. It is added to the lens of the telescope. Using this, the photosphere can be seen using a telescope.
The chromosphere is an irregular layer above the photosphere. Due to the extremly high temperature, hydrogen emits light which gives off a reddish color. This is known as the H-alpha emmision. Therefore, to see this layer with a telescope, a special filter have to be fitted to the lens of the telescope. This filter is called the hydrogen alpha filter.
The corona is the outermost part of the sun atmosphere, however, it is hidden by the sun's bright surface. It can be seen during a total eclipse. This is when the moon covers the bright photosphere.
Answer:
D
Explanation:
If NASA had constructed a Space Shuttle without knowing if it would be safe for its passengers, there could be many casualties. So they would test it beforehand using a model, to make sure that it will be safe and sturdy for when they build it.
Answer:
The epidemiological transition has two stages:
- First, the high mortality caused by infectious diseases and malnutrition;
- The second is characterized by chronic degenerative diseases.
Explanation:
Epidemiological transition is understood as the long-term changes in the patterns of death, disease and disability that characterize a specific population and that usually occur along with broader demographic, social and economic transformations.
It is a dynamic concept that focuses on the evolution of the predominant profile of mortality and morbidity, specifically the epidemiological transition implies a change in the predominant direction: of infectious diseases associated with primary deficiencies (for example, nutrition, water supply, housing conditions) to chronic and degenerative diseases, injuries and mental illnesses, all these related to genetic factors and secondary deficiencies (for example, personal or environmental security effect of opportunities for the full realization of individual potentiality)
The epidemiological transition covers three basic processes:
a) Substitution between the first causes of death of common infectious diseases by noncommunicable diseases and injuries.
b) The displacement of the greatest burden of morbidity and mortality from the youngest groups to the elderly.
c) Changes from a situation of predominance of mortality in the epidemiological landscape to another in which morbidity is dominant.
Answer:
The intermediate magma has a heterogeneous structure, since it has a part of Silice, approximately 50-60% to be more exact.
When it turns into lava, it produces rocks like the Andesite and, in the opposite case of its crystallization, it forms rocks like the Diorite.
A comparison of felsic magma is much more viscous.
It is important to clarify that this magma is a type of primary magma, that is to say that they are magmas formed from the fusion of the rocks of the mantle or the crust.
Explanation:
The fusion of these rocks are what would give rise to the intermediate magma, this intermediate magma is a primary magma, like the mafic and felsic.
The primary magmas unlike the derived magmas is the origin or the reason for how they are formed, which is what we write above, derived magmas usually form differently since they are the product of the evolution or changes that magmas undergo primary
