The intruding magma sometimes gets cooled and crystallized beneath the earth's surface due to the lowering of temperature, as a result of which batholiths and plutons of various size are formed. These are large igneous intrusive bodies that are formed deep below the earth's surface. The plutons are generally larger in size in comparison to the batholiths. These rock bodies are sometimes exposed on the surface due to the erosion of the top layers.
For example, the Aswan Granite batholith that is present in Egypt.
Thus, in the given figure, the magma body that is represented by letter E undergoes cooling and crystallization and thereby forms an igneous rock.
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.
It is impossible to know how many individuals will have the disease at the end without knowing other factors such as the condition where the subjects are being held, trial specifications and safety measures, etc. Based on the information provided, the best prediction that can be made is that all 20 subjects will have the disease. This is because since none of them are immune the disease will spread between the patients/subjects through contact or testing equipment.
