The Decreased Calcium Content in the Shells of Piscivorous Birds

question 45

True/False

The decreased calcium content in the shells of piscivorous birds was a result of bioaccumulation of pesticides in the food chain.

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Definitions:

Sampling Error

The difference between the characteristics of a sample and those of the population from which it was drawn, arising purely by chance.

Directional Research Hypothesis

A hypothesis that specifies the direction of the expected difference or relationship between variables, predicting how one variable will affect another.

Nondirectional Research Hypothesis

A hypothesis that predicts a relationship between variables without specifying the direction of the relationship.

Sampling Plan

A detailed strategy that outlines the process of selecting items or individuals from a population to be included in a sample.