A division of society based on social and economic status.
The nervous system alert in order to shrink of eye is musculoskeletal system.
<h3>What is musculoskeletal system?</h3>
The musculoskeletal system is an essential component of human health. The musculoskeletal system provides form, stability, and movement to the human body.
In addition to providing the body with structure and the means for movement, the musculoskeletal system acts as an endocrine system, stimulated by exercise, interacting through biochemical signaling with other organs in the body.
Learn more about musculoskeletal system here,
brainly.com/question/2952854
#SPJ1
The Yukon river flows across the entire state of Alaska and empties out in the Bering Sea at the Yukon-Kuskokwim Delta. The river is 3,190 kilometers long. Hope this helped :)