In the Example of the Predator/prey Web in the Grassland

question 111

Multiple Choice

In the example of the predator/prey web in the grassland community on Bylot Island, a rise in the snowy owl population would have what effect on the snow goose?

• A)The snow goose population would rise due to owls preying upon foxes.
• B)The snow goose population would fall due to an increase in the fox population.
• C)The snow goose population would fall due to a lower consumption of grasses.
• D)The snow goose population would rise due to lemming, and subsequently fox, populations declining.
• E)The snow goose population would not be affected at all.

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Definitions:

Population Variances

Measures the degree to which each number in a set differs from the mean of the population, calculated as the average of the squared differences from the Mean.

Normal Populations

Populations that exhibit characteristics of normal distribution, where data points tend to cluster around a central mean value.

Degrees Of Freedom

Degrees of freedom represent the number of independent values or quantities which can freely vary in an analysis without violating any constraints imposed on them.

Pooled Variance

A method used to estimate the variance of two or more populations when the mean of each population may differ but the true variance is assumed to be the same.