The Figure Provided Shows a Food Web

question 49

Multiple Choice

The figure provided shows a food web.Which of the following statements is true?

• A) Ten percent of the carbon dioxide fixed by grazers is used by decomposers.
• B) Ten percent of the carbon dioxide fixed by primary producers is used by predators.
• C) Ninety-nine percent of the carbon dioxide fixed by primary producers is lost by the second trophic level.
• D) Grazers consume ten percent of the decomposers.

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Definitions:

P-Value

A statistical measure that helps scientists determine the significance of their research results; a low p-value indicates strong evidence against the null hypothesis.

Binomial Distribution

A probability distribution that summarizes the likelihood that a variable will take one of two independent values under a given number of observations.

Significance Level

A statistical term that quantifies the probability of rejecting the null hypothesis when it is actually true, typically expressed as a percentage or decimal.

Expected Frequency

The predicted count of occurrences for a particular category or event in a statistical distribution, based on a theoretical probability.