An important prelude to a greeting or opening line is often small talk eye contact physical intimacy a pheromone

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center