The Average Age of , a Girl's First Menstrual Cycle

question 13

Short Answer

The average age of , a girl's first menstrual cycle, dropped during the twentieth century.

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Definitions:

Taste

One of the five traditional senses; it's the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds.

Smell

The sensory perception of odorants by the olfactory system, enabling the detection and identification of chemicals in the environment.

Olfaction

The sense of smell, a chemical sensing system processing odors.

Memories

The mental storage of information, experiences, and learning, which can be recalled to inform and guide current behavior and thinking.