A start-up skincare company uses the tagline, “Finally, luxury that doesn’t cost the planet.” It targets eco-conscious millennials who want quality without guilt. Which of the Three Cs is most central in this strategy?

Which photoreceptors specialize in color vision and function best in bright light?

The height of a wave is its:

A one-eared sound localization cue is a ________ cue.

Which hormone released by the pineal gland helps regulate the sleep–wake cycle?

Slightly different views that each eye receives create:

Obstructive sleep apnea differs from central sleep apnea because it involves:

The portion of the electromagnetic spectrum humans can see is the:

Which term refers to a ~24-hour biological rhythm aligned with the light–dark cycle?

The suprachiasmatic nucleus (SCN) is located in the ________ and serves as the body’s biological clock.