Waec Model Questions Vol1 2025 Agricultural Science Question 20
Practice objective / multiple choice question 20 from the 2025 Waec Model Questions Vol1 Agricultural Science examination.
A lake stocked with tilapia follows logistic growth described by dN/dt = r N (1 - N/K), where the intrinsic growth rate r = 0.6 year⁻¹ and the carrying capacity K = 200 000 fish. The fishery harvests a constant number H of fish each year. To ensure that the population never falls below 50 000 fish, what is the maximum sustainable annual harvest H_max (in fish) that can be taken indefinitely?
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This is Waec Model Questions Vol1 2025 Agricultural Science Question 20. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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