Examlex
In research design notation,the letter X signifies a(n)_______________.
Organisms
Entities that exhibit the characteristics of life, such as growth, reproduction, and the ability to respond to their environment.
Brain Cells
The cells that make up the brain, including neurons which process and transmit information, and glial cells that provide support and protection.
Muscles
Muscles are tissues in the body that have the ability to contract, enabling movement of the body and its parts.
Evolution
The method through which various types of organisms are believed to have evolved and varied from their ancestral forms over the earth's history.
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