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WAEC Agricultural Science 2022 Objective — Question 10

Question 10 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2022 Objective paper, with the correct answer and a full explanation.

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The main factors responsible for rock weathering in the desert are high

  • A. temperature and animal activityCorrect
  • B. wind and root growth
  • C. water and wind
  • D. root growth and water

Explanation

In desert environments, high daytime/low nighttime temperature fluctuations (thermal expansion/contraction) combined with animal activity are the main drivers of rock weathering, given the scarcity of water.

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