When numbers of organisms and amounts of living material in successively higher trophic levels are compared, the values
Mechanistically, quantitative reasoning involves ratio, percentage and series logic determine correct calculation. This validates The main primary producers in marine ecosystems are microscopic algae with ex... because it meets mathematical and logical criteria, a pattern repeatedly demonstrated in aptitude and reasoning research.
Ref: Wren and Martin, High School English Grammar and Composition, Revised Edition, Chapter 12, discusses vocabulary and comprehension providing guidance for verbal aptitude and logical inference assessment.