Refer to the Graph

Multiple Choice

Refer to the graph. Based on the results in the graph, is sustainable management of ecosystems profitable, and on what do you base your response?

A) Yes; the values of all sustainable systems are more than double those of unsustainable systems.
B) Yes; the values of all sustainable systems are significantly greater than those of unsustainable systems.
C) Sometimes; the values of all systems except "tropical forest Cameroon" are great enough to be profitable.
D) No; factors other than dollar value must be taken into account to determine profitability.
E) No; the differences in values are not great enough to ensure profitability of sustainable systems.