"D.all of the above" is the answer
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Eczema is the most common inflammatory skin disease of childhood. Moderate to severe eczema can have a effect on the quality of life as well as the productivity of a person. Eczema is usually diagnosed on clinical grounds that would on a patients history, family history and as well as the skin rash appearance.
Answer:
Natural factors of population change can't be swayed by humans. So for an example of a natural factor take an Earthquake. As of right now we can only predict when Earthquakes will. Inevitably some things will still get damaged and that just can't be helped. An Artificial factor for population change is something specifically made by humans. For an example take a genocide. If some guy decides he wants to go on a killing spree, well all I can say is that is Definitely not natural. Hope that helped.
