What statement could explain why viruses were not the first to evolve?

viruses are parasites
viruses have to infect a living cell in order to reproduce
viruses have no cell membrane
viruses contain either dna or rna

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

How do the evolutionary chart and the video support the claim that all living things are made up of cells?