Please help me, I am on a very tight deadline. If you do, I will appreciate it a lot and even give you brainliest. What does the skeletal system make that is needed by the circulatory system? How does this product aid the respiratory system? Explain your answer

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.