Aerobic exercise builds endurance and strengthens the heart, especially when your heart rate is in the target heart rate zone. True
False

What are 3 important public health tools for addressing flu outbreaks and why

Which action encourages homophobia? tolerating others' opinions welcoming someone into a group respecting others' differences accepting inappropriate terminology

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors.b) transcription from the host cell rna polymerase introduces numerous mutations.c) capsid proteins from the host cell can replace the viral capsid.d) viral rna is translated by host cell ribosomes.