Examlex
External validity refers to the extent to which
Nervous Systems
The nervous system is the complex network of nerve tissue that controls activities within the body by transmitting electrical and chemical signals between different body parts.
Essential
Absolutely necessary or extremely important for a particular process, function, or survival.
Life
A characteristic that distinguishes physical entities with biological processes, such as signaling and self-sustaining processes, from those that do not.
Bilateral Symmetry
Body plan in which organs or parts present on both sides of the body are mirror images in appearance. For example, the hands are bilaterally symmetrical, whereas the heart is not.
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