Answer:
Nitrogen fixation by bacteria
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Are there multiple choices?
The Federal government would be too weak to do enforce its laws
Answer: Social epidemiology is the study of the causes and distribution of diseases.
Explanation: Social epidemiology studies which are the determinants of health and diseases in the world.<u> This discipline focuses on the role that social structures play in the health of individuals and populations</u>, that is to say<u> it studies how social conditions affect health levels and attract diseases. </u>Therefore, social epidemiology establishes a relationship between the distribution of social advantages and disadvantages and the distribution of health and disease.
The answer would be: <span>Changing Age Structure of the Population
In order to create a successful marketing campaign for their products, marketing teams need to pay attention to the difference in taste that a new age group has compared to the older one. Because one day, the new age group will grow up to be the demographic that held the most economic power.
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