How can you specify an element to be essential Give an example - Biology - Mineral Nutrition

Question

How can you specify an element to be essential Give an example

Mushtaq · Accepted Answer

Kindly refer the links below for
answer

https://www meritnation
com/ask-answer/question/state-three-criteria-of-essentiality-of-an-element/mineral-nutrition/3284184

For example, nitrogen, phosphorous etc

Regards

How can you specify an element to be essential . Give an example.