3. the five components of physical fitness are cardiorespiratory endurance,
flexibility, muscular strength,
a body weight, and body height
b muscular composition, and body type
c muscular endurance, and body composition
od muscular endurance, and body weight

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.