Because of their high rate of mutation. They also can be hard to track because they infuse their DNA into your body cell DNA and can lay dormant and undetected for years.
Space, environment, weather, population increase and decreas
Answer:
some sort of water system, (a river/groundwater/purification plant ect.)
Explanation:
D is the answer to the question
The burden of diseases A and B in country Z is that disease B has a higher prevalence than
disease A. That is option D.
<h3>Health statistics of Country Z</h3>
Health statistics is used by professionals to summarize the health status or information on the health of individuals in a particular geographical location.
The basic statistic tools that can be used to check the health status of a population are,
The prevalence rate is the total number of cases of a disease existing in a population divided by the total population.
The prevalence rate of disease A = 225 per 100,000 population while the prevalence rate of disease B = 500 per 100,000 population.
Therefore, the burden of diseases A and B in country Z is that Disease B has a higher prevalence than
disease A.
Learn more about prevalence here:
brainly.com/question/25151633
