The process of assimilation refers to the changes and adjustments that occur when groups of different people come into sustained firsthand contact

Gender is defined as:

A. an individual's emotional and intellectual awareness of being either male or female. B. personality characteristics, attitudes, behaviors, and expectations about femininity and masculinity. C. the meanings that societies and individuals attach to being female and male. D. the biological division of humanity.

The wavelength of a light wave refers to:

a. the distance between the crests of a wave. b. the amplitude of a wave. c. the maximum height of a wave. d. the variations in saturation.