QUES: The motor centers of reptiles react to sensory cues of vision, sound, touch, chemical, gravity, and motion with pre-set body movements and programmed postures. With the arrival of night-active mammals, smell replaced vision as the dominant sense, and a different way of responding arose from the olfactory sense, which is proposed to have developed into mammalian emotion and emotional memory. The mammalian brain invested heavily in olfaction to succeed at night as reptiles sleptone explanation for why olfactory lobes in mammalian brains are proportionally larger than in the reptiles. These odor pathways gradually formed the neural blueprint for what was later to become our limbic brain.

What developed from the mammalian sonic pathways?
What is the answer?
ANS: unanswerable
QUES: BYU's social and cultural atmosphere is unique. The high rate of enrollment at the university by members of The Church of Jesus Christ of Latter-day Saints (more than 98 percent) results in an amplification of LDS cultural norms; BYU was ranked by The Princeton Review in 2008 as 14th in the nation for having the happiest students and highest quality of life. However, the quirkiness and sometimes "too nice" culture is often caricatured, for example, in terms of marrying early and being very conservative.

What did the Princeton Review point out about the "too nice" culture?
What is the answer?
ANS: unanswerable
QUES: The halogen lamp reduces uneven evaporation of the filament and eliminates darkening of the envelope by filling the lamp with a halogen gas at low pressure, rather than an inert gas. The halogen cycle increases the lifetime of the bulb and prevents its darkening by redepositing tungsten from the inside of the bulb back onto the filament. The halogen lamp can operate its filament at a higher temperature than a standard gas filled lamp of similar power without loss of operating life. Such bulbs are much smaller than normal incandescent bulbs, and are widely used where intense illumination is needed in a limited space. Fiber-optic lamps for optical microscopy is one typical application.

Where are halogen bulbs not widely used?
What is the answer?
ANS:
unanswerable