The available soil is being polluted quickly by _____________ wastes.
Correct answer: D. All of the above
- A. Industrial
- B. Agricultural
- C. Household
- D. All of the above
Explanation
Industrial, agricultural, and household wastes can all introduce chemicals, salts, pathogens, or heavy metals into soil. Their different sources do not change the fact that each can pollute available soil resources.
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