Final answer:
Sexual dimorphism refers to variations in physical and behavioral traits between males and females. This can include differences in size, coloration, and ornamental traits. Hormonal activities can also contribute to behavioral differences.
Step-by-step explanation:
Sexual dimorphism refers to the variations in physical and behavioral traits between males and females of a species. In many animal populations, there is more variance in the reproductive success of males than females, leading to differences in size, coloration, and other ornamental traits. For example, male peacocks have elaborate tails to attract females, while females are smaller and less decorated. Hormonal activities can also contribute to behavioral differences, such as males being more aggressive and females being more emotional.