From 1935 to 2017, the Yield Per Acre for Wheat

question 164

Multiple Choice

From 1935 to 2017, the yield per acre for wheat has ________ in the United States.

• A) slightly declined
• B) roughly doubled
• C) more than tripled
• D) increased more than 6-fold

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Definitions:

REM Sleep

Rapid Eye Movement (REM) sleep, a unique phase of sleep involving vivid dreams, and is thought to play a role in learning and memory.

N3 Sleep

The third stage of non-REM sleep, characterized by deep sleep and the slowest brain waves during sleep, essential for restorative sleep.

N2 Sleep

A stage of sleep associated with the first instances of true sleep spindles and K-complexes, marking deeper sleep than N1.

N1 Sleep

The initial stage of the sleep cycle that marks the transition from wakefulness to sleep, characterized by light sleep and reduced sensory activity.