measuring biodiversity in a community can ecologists predict the stability of an ecosystem. more biodiverse communities can make ecosystems more resilient to changes from natural or human origin. calculate the simpson's diversity index for a community with the following species distribution:
81 pine trees
19 oak trees
10 maple trees
a) 0.22
b) 0.42
c) 0.58
d) 0.81

the answer is B) 0.42

Explanation:

When you divide each of the individual species by 110, you then square the answer. These answers are then added (summed) together. This gives you 0.58. However, the last step requires you to subtract that from 1. This gives you 0.42.

1. a tropical dry forest carries out more rapid nutrient cycling

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation: