My daughter stay fresh like her daddy

Which challenges do countries face in limiting the spread of communicable diseases? check all that apply. 1. lack of vaccinations 2. lack of healthy food available 3. increase of worldwide travel 4. decrease of available clean water 5. increase in migration of infected animals

Lordosis can often be prevented by strengthening core muscles in the abdominals and back. a. true b. false

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