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GPP minus respiration losses equals:

ANPP
BPAR
CGPP
DSPP
Answer & Solution
Correct answer: A. NPP
1. Plants use part of their gross production in respiration. 2. What remains is available to heterotrophs. 3. GPP minus R gives net primary productivity. 4. So the answer is NPP. _Source: syllabus Biology, Ch 12 'Ecosystem'_
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