1pt Which of the following respiratory structures produces sound?
A. larynx
B. pharynx
C. bronchi
D. trachea

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.

Building muscle has which of the following effects? it increases the metabolic rate. it relieves pressure on the joints. it slows weight loss considerably.

The hazard communication standard has requires that each container holding a hazardous chemical have a warning label that is easily seen . what information must the label contain ?