What data did you use to answer this question?

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

Any sound above what db can cause hearing loss in human beings

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.