Examlex
Which is the area of specialized nervous tissue in the heart that is known as the "pacemaker of the heart"?
Genetic Differences
Variations in the DNA sequence among individuals within a species, contributing to diversity in appearance, behavior, and susceptibility to diseases.
Population Groups
Categories of individuals identified by shared characteristics such as ethnicity, nationality, religion, or other social markers.
Humans
are bipedal primates in the genus Homo, particularly Homo sapiens, characterized by their ability to create complex societies, use language, and manipulate the environment.
Fitness
The condition of being physically healthy and strong, often achieved through exercise and proper nutrition.
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