Question

figure 2: the role of photosynthesis and cellular respiration in the carbon cycle
based on the data table, what is the net carbon removed from the atmosphere by the combined processes of photosynthesis and cellular respiration?
a +300 g
b +600 g
c +1400 g
d +2700 g

Explanation:

Step1: Identify carbon changes

Photosynthesis removes 1500g (sink: plant biomass from atmosphere), cellular respiration adds 1200g (source: plant biomass to atmosphere).

Step2: Calculate net removal

Net = Carbon removed - Carbon added = $1500 - 1200$

Answer:

A. +300 g