The contraction of infectious diseases can be avoided by practicing good avoiding contact with and boosting your immune system with immunizations. 1st blank options: nutrition; hygiene 2nd blank options: vectors; phagocytes; carcinogens

The idea that some faces are inherently more attractive than others is supported by research demonstrating that people we like seem more attractive to us. people prefer averaged composite faces to individual faces. people from different cultures enhance their appearance in different ways. standards of beauty change over time.