ql-formula" data-value="\begin{array} { l l l } \text { Species } & \text { Community A } & \text { Community B } \\\text { Betula lenta } & 42 & 29 \\\text { Acer saccharum } & 33 & 35 \\\text { Acer pensylvanicum } & 12 & 20 \\\text { Fagus grandifoia } & 10 & 1 \\\text { Tilia Americana } & 1 & 8 \\\text { Quercus rubra } & 9 & 2 \\\text { Prunus serotina } & 1 & 1 \\\text { Robinia pseudoacacia } & 3 & 8 \\\text { Acer rubrum } & 1 & 2 \\\text { Prunus pensylvanica } & 2 & 0\end{array}">

\begin{array} { l l l } \text { Species } & \text { Community A } & \text { Community B } \\\text { Betula lenta } & 42 & 29 \\\text { Acer saccharum } & 33 & 35 \\\text { Acer pensylvanicum } & 12 & 20 \\\text { Fagus grandifoia } & 10 & 1 \\\text { Tilia Americana } & 1 & 8 \\\text { Quercus rubra } & 9 & 2 \\\text { Prunus serotina } & 1 & 1 \\\text { Robinia pseudoacacia } & 3 & 8 \\\text { Acer rubrum } & 1 & 2 \\\text { Prunus pensylvanica } & 2 & 0\end{array}

The table lists tree species observed in communities A and B. Based on these data, calculate the estimated number of species in each community. How does the number of species represented by single individuals affect the estimated number of species in the community?

Islands at Equilibrium That Are Farther from the Mainland Contain