Which Criteria Allow Biologists to Divide Chemicals into Macronutrients and Micronutrients

Question

Which criteria allow biologists to divide chemicals into macronutrients and micronutrients?
A) whether or not they are essential for plant growth
B) their availability in the soil
C) the way they are used by plants
D) the amounts in which plants need them
E) all of the above

Accepted Answer

Biologists differentiate chemicals into macronutrients and micronutrients based on the amounts in which plants require them. Macronutrients are required by plants in large amounts, while micronutrients are needed in smaller amounts. The other criteria mentioned (essentiality for plant growth, availability in the soil, and how they are used by plants) can be used to further categorize these nutrients, but they are not the primary criteria used to differentiate between macronutrients and micronutrients.