Between 1950 and 2000, Global Loss of Topsoil from Cropland

question 11

True/False

Between 1950 and 2000, global loss of topsoil from cropland amounted to only 2 percent of total arable land.

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Definitions:

Delta-Sleep-Inducing Peptide

a naturally occurring neuropeptide that has been shown to induce sleep-like states and deepen sleep modes.

Zolpidem

A medication used primarily for the short-term treatment of sleeping problems.

Tryptophan

An essential amino acid that serves as a precursor to serotonin, a neurotransmitter important for mood regulation and sleep.

Narcolepsy

A neurological disorder that affects the control of sleep and wakefulness, characterized by excessive daytime sleepiness and sudden sleep attacks.