Why Do Scientists Say That Evolution Is a "Theory

question 33

Multiple Choice

Why do scientists say that evolution is a "theory"?

• A) Because it explains a great deal about life and is supported by an enormous body of evidence
• B) Because they are not very confident that it really happened
• C) Because it's really just a guess about how life developed on Earth
• D) Because it is supported by only a small amount of evidence

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Definitions:

Receptor Cells

Specialized cells that respond to specific types of energy (e.g., light, sound) and convert it into electrical signals for the nervous system.

Retina

A thin layer of tissue located on the inside back wall of the eye, containing cells that are sensitive to light and trigger nerve impulses that are sent to the brain via the optic nerve.

Dim Light

A level of illumination that is subdued or less than bright, often creating a mood of relaxation or serenity, and can influence the perception of environments.

Rods

Rods are photoreceptor cells in the retina that are highly sensitive to light and enable vision in low-light conditions.