Kelp,a Seaweed That Is Anchored to the Seafloor by Rootlike

question 18

Multiple Choice

Kelp,a seaweed that is anchored to the seafloor by rootlike structures and can grow to heights of 60 m,is a kind of

• A)green alga.
• B)water mold.
• C)brown alga.
• D)diatoms.

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Definitions:

Third Variable Problem

A challenge in research where an unmeasured, external factor causes the correlation between two variables, complicating causal interpretations.

Directionality Problem

In research, the issue of not knowing whether variable A causes variable B or vice versa.

Correlational Studies

Correlational studies are research methods that examine the relationship between two or more variables to determine if a statistically significant association exists, without inferring cause and effect.

Correlation

A statistical measure that indicates the extent to which two variables fluctuate together, without necessarily implying causation.