How Does the Volcano Arenal Affect the Local Costa Rican

Multiple Choice

How does the Volcano Arenal affect the local Costa Rican biosphere?

A) It creates new land on which organisms can establish themselves
B) It encourages ecotourism,as the eruptions are relatively safe and nearly continuous
C) It adds necessary nutrients to soil that support plant growth
D) The volcano affects the biosphere in all these ways
E) None of these choices are correct.