Which of these is a nutrient that is best derived through diet?

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

Elderly nursing home residents tend to decline faster and die sooner than they would otherwise if they lacka)biofeedback.b)mindfulness meditation.c)perceived control.d)type a personalities

Which of the following could use reverse transcriptase to transcribe its genome? a) ssrnab) dsrnac) ssdnad) dsdna