Which of these statements is true? the use of cigarettes has increased since 1996. the use of cigarettes has dropped for adults but has risen for high school students since 1996. the use of cigarettes has dropped since 1996. the use of cigarettes has remained the same since 1996.\

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.