Several Key Factors Help to Determine the Types and Numbers

question 36

Multiple Choice

Several key factors help to determine the types and numbers of organisms found in the various layers of both freshwater and marine systems.What is not one of these?

• A) algal bloom
• B) availability of nutrients
• C) temperature
• D) dissolved oxygen levels
• E) availability of food

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Definitions:

Normally Distributed

This probability distribution is distinguished by its symmetric nature around the mean, showcasing higher frequencies of data points near the mean than those at greater distances.

Mean

The arithmetic average of a set of values or observations, calculated by summing all numbers and then dividing by the count of the numbers.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how spread out the numbers are.

Normally Distributed

A statistical description of a data set that forms a bell-shaped curve when graphed, indicating that most values are close to the average.