alleryWhich unit is used to compare the productivity of different ecosystems?
AIndividuals per square metre
BGrams per square metre only
CKilocalories per gram of tissue
DGrams per square metre per year
Answer & Solution
Correct answer: D. Grams per square metre per year
Productivity is a rate, so it is expressed as mass per unit area per unit time, such as g per square metre per year.
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