The Variable (Pi) Used in the Shannon's Diversity Index (Or

question 21

Multiple Choice

The variable (pi) used in the Shannon's Diversity Index (or Shannon-Wiener Index) is

• A) the number of trophic levels in the food web under study.
• B) the number of connections between species in the food web under study.
• C) the relative abundance value for each of the species in the community under study.
• D) the relative evenness value for each of the species in the community under study.

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Definitions:

Control

In the context of experiments, a standard condition or treatment that does not change, used as a benchmark to measure the effects of the experimental variable.

Activation Energies

The minimum amount of energy required to initiate a chemical reaction.

Antibonding π Molecular Orbital

A molecular orbital formed when lobes of p orbitals on two atoms combine in a phase mismatch, weakening the bond between the atoms.

Allyl Cation

A positively charged species (ion), specifically a reactive intermediate with the structure CH2=CH-CH2+.