Answer:
Viruses determines the border line between the living and non living organisms. Viruses always requires a host to show the characteristics of the living organism.
Virus may also acts as pathogen for the human being. The virus has the ability to change evolve their genetic material rapidly. In case of the immunization of the influenza virus, virus might evolves quickly for the particular one vaccine and helps in providing long term protection.
Answer:
Noble gases are extremely stable and conduct electricity.
Explanation:
They're stable because each noble gas has a full outer shell of electrons, which means they don't need to gain or lose an electron.
Explanation:
1 Formal demography limits its object of study to the measurement of population processes,
2 it refers to events as birth, death, migration, marriage and divorce
3 it studies only numerical data and human population
4 Formal demography is older approach to study population
1 Social demography deals with questions of population composition and change and how they interact with sociological variables at the individual and contextual levels
2 Social demography is analytical, statistical and quantitative study of human population
3 It studies both numerical data and social traits of human population.
4 social demography is newer approach to study population
