Multiple choice

______ is the richest natural source of minerals for plants.

  1. Chemical fertilizers

  2. Soil

  3. Air

  4. Water

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil contains a wide variety of essential minerals and nutrients that plants absorb through their roots. While air provides carbon dioxide and water provides hydrogen and oxygen, the bulk of mineral nutrients like nitrogen, phosphorus, and potassium come from the soil. Chemical fertilizers are used to supplement these natural levels but are not the primary natural source.

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