What do you mean by fossil. explain importance of fossil as proof of evolution.​

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.

Which codon is the code for the amino acid histidine (his)?

The instructions for making proteins come originally from