If your body fat is 23.22 how many reps of what do you have to do to get to 18.11 body fat

What is the hormone in your brain that makes you feel happy?

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.

Is psychology a science? use evidence form the article to explain you answer.