Answer:
Option A, pathogen A
Explanation:
ID50 is a way to measure the virulent efficiency of a pathogen. ID50 for a pathogen depicts the number of pathogens required to infect or cause the associated disease with in 50 percent of any population sample.
This means that 50 pathogens A can infect 50 percent of any sample population.
While 1000 pathogen B and 1000000 pathogen C are required to infect 50 percent of any sample population.
hence, Most virulent pathogen is Pathogen A
"maintaining a steady state internal environment, despite a changing external environment, is called homeostasis"
<span>Homeostasis is any self-regulating process by which biological systems tend to maintain internal stability with the tendency to resist external changes. Homeostasis involves negative and positive feedback loops.</span> <span>Homeostasis depends on the ability of the body to detect (via sensors) and oppose these changes. From sensors signals are sent to the control center<span> in the brain, and then after processing the information the </span>effectors are activated.</span>
Answer:
Derived traits shared among the species or other groups in a dataset are key to helping us build trees. As shown above, shared derived traits tend to form nested patterns that provide information about when branching events occurred in the evolution of the species.
Explanation:
I hope this helps
