WAEC Biology 2021 Theory — Question 16
Question 16 of 26 from the West African Examinations Council (WAEC) Biology 2021 Theory paper, with the correct answer and a full explanation.
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5(a). Complete the table below by naming the nutrient cycle that involves each of the given processes (Combustion, Precipitation, Lightning) and give three other processes involved in that nutrient cycle.
Model answer
Combustion → Carbon cycle (other processes: putrefaction, respiration, photosynthesis). Precipitation → Water cycle (other processes: evaporation, condensation, transpiration). Lightning → Nitrogen cycle (other processes: ammonification, nitrification, denitrification).
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