Which of the Following Was the Most Likely Cause of the Limited

question 74

Multiple Choice

Which of the following was the most likely cause of the limited diversity of multicellular eukaryotes for much of their early existence?

• A) High concentrations of oxygen
• B) Frequent periods of heat
• C) Frequent periods of cold
• D) The existence of plankton
• E) The lack of plankton

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Definitions:

Regression

A statistical method used to determine the strength and character of the relationship between one dependent variable and one or more independent variables.

Hawthorne Effect

The phenomenon where subjects alter their behavior simply because they are aware that they are being observed.

Random Errors

Errors in measurement that lead to inconsistent results, often caused by unpredictable and uncontrollable factors.

Randomized Controlled Trials

A study design that randomly assigns participants into an experimental group or a control group to measure the effect of an intervention.