Question

Statement I: The annual net primary productivity of the whole biosphere is approximately 170 million tons (dry weight) of organic matter.
Statement II: Of this, despite occupying about 70 percent of the surface, the productivity of oceans are only 55 million tons.

• A. Both statements I and II are correct and II explains I
• B. Both statements I and II are correct and II does not explain I
• C. Statement I is true and statement II is false
• D. Both statements I and II are false

Answer 1

Answer: (D)

• The annual net primary productivity of the whole biosphere is approximately $170$ billion tons (dry weight) of organic matter.
• Of this, despite occupying about $70$ percent of the surface, the productivity of oceans are only $55$ billiontons.