In an Experiment,a Researcher Manipulates One Variable to See How

question 1

Multiple Choice

In an experiment,a researcher manipulates one variable to see how it affects a second variable.The second variable,which is observed for any possible effects,is called the __________.

• A)dependent variable
• B)control variable
• C)independent variable
• D)hypothetical variable

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Definitions:

Vertebrates

Animals that have a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fish.

Polymerization

A chemical process that combines small molecules (monomers) into a larger compound (polymer) with repeating structural units.

Organic Monomers

Small organic molecules that can chemically bind to other molecules to form polymers, essential in the structures of life.

Clay

A natural, earthy material known for its plasticity when wet, used in ceramics and as a key component of soil.