Researchers Wanted to See If Adults Were Actually Afraid of the Dark

question 69

Multiple Choice

Researchers wanted to see if adults were actually afraid of the dark by exposing them to different levels of light in a room while measuring their heart rates.In this experiment,what are the different levels of light?

• A)the dependent variable
• B)the independent variable
• C)the control group
• D)the experimental group

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Definitions:

Scientists

Professionals who conduct research and experiments to discover new knowledge and develop technologies.

Homology

Refers to the existence of shared ancestry between a pair of structures, or genes, in different taxa.

Forelimbs

The front limbs of an organism, which in humans are the arms, including the hands, wrists, forearms, and elbows.

Mammals

The class of vertebrates characterized by hair, mammary glands, a diaphragm, and differentiation of teeth.