Gross Primary Productivity (GPP) is: A) The total amount of energy produced through photosynthesis. B) The...

1) Gross Primary Productivity (GPP) is:
A) The total amount of energy produced through photosynthesis.
B) The energy captured by producers through photosynthesis.
C) The energy used by producers through respiration.
D) The energy used by consumers through respiration.
2) Net Primary Productivity (NPP) is calculated as:
A) GPP x Respiration
B) GPP + Respiration
C) GPP - Respiration
D) Respiration
3) The graph shows productivity measurements for a forest ecosystem:
During which season is NPP highest in this forest ecosystem?
A) Winter (Dec-Feb)
B) Spring (Mar-May)
C) Summer (Jun-Aug)
D) Fall (Sep-Nov)
Justify your answer: