The textbook classifies the elements essential for life into four categories: the bulk structural elements; the macrominerals; the trace elements; the ultratrace elements.What do these categories mean? Give an example of one element in each category.

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The Answer of The textbook classifies the elements essential for life into four categories: the bulk structural elements; the macrominerals; the trace elements; the ultratrace elements.What do these categories mean? Give an example of one element in each category.

The Textbook Classifies the Elements Essential for Life into Four