Which hygeine claim is supported by research?
a. there are no benefits to hand washing
b. regular hand soap prevents disease just as well as antibacterial soap
c. regular professional teeth cleaning has no effect on dental health
d. brushing with a fluoride toothpaste has no effect on cavities

Which of these pieces of safety equipment should be worn when operating a chainsaw

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 of these tents to result in obesity ?