Examples of overpopulation in animals

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

What best explains the inability for life to exist in earth early atmosphere

Which is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?