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496
Which of the following causes pollution?
  • A. Consumption of canned drink
  • B. The addition of fertilizer to farmland
  • C. Respiration of living organism
  • D. Burning of refuse
View Answer & Discuss (1) JAMB 1988
497

The mineral nutrient that is most bound to the soil is

  • A. phosphorus
  • B. calcium
  • C. iron
  • D. potassium
View Answer & Discuss (28) JAMB 1988
498
The mineral nutrient that easily gets leached out of the soil is
  • A. phosphorus
  • B. calcium
  • C. magnesium
  • D. nitrate
View Answer & Discuss (3) JAMB 1988
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499
Most commercial fertilizers are rich in salts of
  • A. sodium, iron and calcium
  • B. nitrogen, phosphorus and potassium
  • C. iron, copper and nitrogen
  • D. calcium, sodium and phosphorus
View Answer & Discuss (4) JAMB 1988
500

Dead plants and animals are decomposed by bacteria and fungi into

  • A. nitrate
  • B. nitrites
  • C. amino acids
  • D. ammonium
View Answer & Discuss (3) JAMB 1988
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