| Source | Nutrients |
|---|---|
| Air | Carbon, oxygen |
| Water | Hydrogen, oxygen |
| Soil | (i) Macronutrients: nitrogen, phosphorus, potassium, calcium, magnesium, sulphur. (ii) Micronutrients: iron, manganese, boron, zinc, copper, molybdenum, chlorine |
Give the functions of bone.
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State the difference between smooth endoplasmic reticulum and rough endoplasmic reticulum.
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