30 days is the actual lifespan
Answer:
A .Viruses cannot evolve but can infect living cells.
Answer:
C. Classification systems meet the needs of medical insurance companies who need diagnoses in order to authorize payment of claims.
Explanation:
In order to guide against intentional overdiagnose of a person with minor or non existing true diagnosis to gain approval for treatment services by some healthcare professional, classification system is used by the Medical insurance to determine the value of treatment to authorize, and to relate the severity of the diagnose to the payment.
Thus ;serious disorders with challenging prognosis receive more treatment approval, than less serious disorder
Answer:
a.energy source ,either sunlight or chemicals
Explanation:
the animals using sunlight are known as photoautotrophs and the animals using chemicals are known as chemoautotrophs.
