Amother's special speech to her baby, sometimes referred to as"parentese" may:
a. limit infant speech growth
b. the infant become aware and hold his attention
c. produce a musically talented toddler
d. promote infant behaviors that are unsociable

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.