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Correct answer is B. In terms of community ecology, pathogens are often more virulent now than in the past because host organisms have become more susceptible because of weakened immune systems.
Pathogens often more virulent now than in the past as New habitats have not provided a possibility for hosts to develop a disease resistance through natural selection.
What are Pathogens ?
An organism that infects its host with disease is referred to as a pathogen, and the severity of the disease symptoms is referred to as virulence. Pathogens include viruses, bacteria, unicellular and multicellular eukaryotes, as well as other taxonomically diverse organisms.
Viral, bacterial, and fungal pathogens are the most prevalent types. Pathogens can cause a wide variety of diseases. Common viral pathogens include the common cold, dengue fever, yellow fever, and the flu. Similar to this, bacterial pathogens may cause illnesses including gonorrhea, TB, and urinary tract infections (UTI).
Why is a pathogen generally more virulent in a new habitat?
Why is a pathogen generally more virulent in a new habitat Hosts in new environments have not had a chance to become resistant to the pathogen through natural selection.
To learn more about organisms from the given link:
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