Examlex
Solids usually have much greater densities than gases because molecules of a solid are much farther apart.
Concentrate
To focus one's attention or mental effort on a specific object, task, or goal, often by eliminating distractions.
Late Afternoon
The part of the day that extends from the mid to late afternoon, often considered to start around 3 pm and last until sunset.
Circadian Arousal
The fluctuation of physiological and behavioral processes, including wakefulness and sleepiness, following a roughly 24-hour cycle, influenced by external light-dark cycles.
Melatonin Secretion
The release of the hormone melatonin by the pineal gland, typically increased in response to darkness, influencing sleep patterns.
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