Answer:
Biology, in simple terms, is science related to living organisms such as human beings, insects, and things alike.
Abiogenesis is another name for spontaneous generation.
Virus is non living, but once it gets a host (something to live on), it is a living being.
Improper temperature control is one of the primary causes of illness or diseases as if the temperature is not set right, it could make bacteria grow or expand which is potentially harmful especially if they are to consume food-- if you food is contaminated with harmful bacteria because of improper temperature control, it could cause the food to be contaminated or spoiled, when consumed, it could led the person to have food poisoning.
It is an example of migration. Hope this helps!