__ is the leading cause of death among the sick and elderly.

1. the flu
2. strep throat
3. pneumonia
4. common cold

Which are fat-soluble vitamins? a. abcd b. abek c. abdk d. acdk e. adek

Which of the following viruses would most likely have reverse transcriptase? a) an rna-based lytic virusb) an rna-based lysogenic virusc) a dna-based lytic virusd) a dna-based lysogenic virus

The age of receding pandemics is one of three progessive ages of epidemiologic transition. select one: true false