These unsegmented worms have a full digestive system even when parasitic.
The answer for your question is b and c.
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The west Nile Virus is pathogen which caused the West Nile fever and encephalitis. The pathogen was introduced in 1999 in the Western Hemisphere and infected a major population in new york. It then expanded to 12 states and district of columbia. The major carrier of the pathogen was Avian and Mosquitoes species. In between 1999 to 2008, nearly 2500000 people were infected and nearly 1500 people died. Also there were thousands of cases of encephalitis or meningitis.
Answer:
There would be a difference between the results.
Explanation:
Because the question is not complete, I will provide a brief explanation. There would be a difference in the results. This is because of the different measurement method. One method is based on the theoretical formulation. The other, is based on the actual work. This makes the outcome to be different.