Union Membership Declined During the 1920s Due to

question 19

Multiple Choice

Union membership declined during the 1920s due to

• A) the growth of the service sector.
• B) increased use of high-tech, labor-saving devices in the manufacturing sector.
• C) firms' use of "yellow-dog" contracts.
• D) poor union leadership.
• E) All of the above.

---

Definitions:

Human Retina

The light-sensitive layer at the back of the eye that contains cells (rods and cones) which convert light into neural signals for vision.

Wavelength

The distance between successive peaks of a wave, often used to describe the physical property of light, sound, and other waves.

Dark Adaptation

The process by which the eyes become more sensitive to light in low illumination, improving the ability to see in darkness.

Cones

Photoreceptor cells in the retina of the eye that function best in relatively bright light and are responsible for perceiving color and fine detail.