Examlex
Which of the following describes the tools of the earliest H. sapiens?
Calcium
A chemical element essential for living organisms, primarily in cell signaling, blood clotting, and bone and teeth formation.
Vitamin D
A fat-soluble vitamin that helps the body absorb calcium and phosphorus, playing a crucial role in maintaining bone health.
Digestive System
The series of organs responsible for breaking down food, absorbing nutrients, and expelling waste from the body.
Digestive System
The series of organs and glands responsible for the breakdown of food, absorption of nutrients, and elimination of waste.
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