Red-Cheeked Salamanders Are Partially Protected from Predators Because of Cardiac

question 2

Multiple Choice

Red-cheeked salamanders are partially protected from predators because of cardiac glycosides they produce from glands on their back. When ingested, cardiac glycosides disrupt normal heart rhythms. A different salamander species, the imitator salamander, also has red cheek patches, but does not produce cardiac glycosides. It does gain protection from predators that have learned to avoid red-cheeked salamanders. This relationship has which of the following effects on the population dynamics of both species?

• A) Both species are negatively affected.
• B) Both species are positively affected.
• C) The red-cheeked salamander is positively affected; the imitator is negatively affected.
• D) The red-cheeked salamander is not affected; the imitator is positively affected.

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Definitions:

Compound Interest

Interest calculation that encompasses both the initial principal and the cumulative interest that has accrued in preceding periods on a deposit or loan.

Simple Interest

A way of calculating interest where the interest charge is based on the original principal amount alone.

Compounded Annually

A method of calculating interest where the interest amount is added to the principal sum at the end of each year, affecting the total interest for the next year.

Interest on Interest

The compound interest that is calculated not only on the initial principal but also on the accumulated interest of previous periods.