HELP ASAP!! What are the early symptoms of HIV and how do they contribute to the spread of this virus?

Explain which dri value would you use to make sure that the vitamin supplement that you use does not contain too much vitamin a

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.

Which form of birth control good people use without altering hormonal systems are blocking sperm from fertilizing an egg