Organisms are composed of many elements. Which is the least abundant of these?
A)oxygen
B)nitrogen
C)calcium
D)carbon
E)hydrogen

Name: Organisms are composed of many elements. Which is the least abundant of these? A)oxygen B)nitrogen C)calcium D)carbon E)hydrogen
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Question

Quizplus · Accepted Answer

Calcium is the least abundant element in organisms. It plays important roles in processes such as muscle contraction and nerve function, but is not as ubiquitous as elements such as oxygen, nitrogen, carbon, and hydrogen.

Organisms Are Composed of Many Elements