Question

1 after six years of successional time, about how much organic mass is produced per square meter per year?
○ 110 gm2/y
○ 410 gm2/y
○ 600 gm2/y
○ 800g/m2/y

Explanation:

This question is about ecological or biological productivity, likely related to secondary succession or forest productivity. In forest ecosystems, after about six years of succession, the organic matter production (net primary productivity or related) per square meter per year for a developing forest (after initial succession) typically falls in a range. The option 600 g/m²/yr is a reasonable estimate for forest productivity at this stage (considering typical forest NPP values, where mature forests might be lower but developing ones after a few years can be in this range, and the other options like 110 is too low for forest, 410 might be lower than expected, 8000 is extremely high).

Answer:

600 g/m²/yr (the option with "600 g/m2/yr")