It is a common knowledge that most people need between 7 and 8 hours of sleep per night. However, sleep needs differ according t
o factors like age, gender, health, and lifestyle. Sleep deprivation and various sleep disorders increase risk for diseases like cancer, obesity, diabetes. A. True
B. False
Active immunity occurs when our own immune system is responsible for protecting us from a pathogen. Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else.
