Concept:
Nutrients are broadly divided into macronutrients and micronutrients.
Step 1: Macronutrients are needed in large amounts.
Step 2: They include carbohydrates, proteins, and fats.
Step 3: They provide energy and support growth and body functions.
Step 4: Micronutrients are needed in small amounts.
\[
\boxed{\text{In large amounts for energy and growth}}
\]