Neco Model Questions Vol1 2023 Agricultural Science Question 25
Practice objective / multiple choice question 25 from the 2023 Neco Model Questions Vol1 Agricultural Science examination.
A community emits 500 tonnes of CO₂ each year. A fast‑growing tree species sequesters 0.025 tonnes CO₂ per tree per year for the first 10 years and 0.015 tonnes per tree per year thereafter. The annual mortality rate of the trees is 2 % (survival factor \(0.98\) per year). How many trees must be planted now so that, after 10 years, the annual net sequestration equals or exceeds the community's emissions? Give the smallest whole number of trees.
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About This Question
This is Neco Model Questions Vol1 2023 Agricultural Science Question 25. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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