When you get your ZZZs, you cycle between REM and non-REM sleep. REM stands for rapid eye movement. During REM sleep, your eyes move quickly in different directions. That doesn't happen during non-REM sleep. First comes non-REM sleep, followed by a shorter period of REM sleep, and then the cycle starts over again.
Classes of Wheat. The many types of wheat grown throughout the world have common names such as durum, poulard, einkhorn or emmer. In the United States, there are generally six classes of wheat grown: hard red winter, hard red spring, durum, soft red winter, hard white and soft white.
This variation in environmental conditions has a major influence on the prevalence and incidence of specific wheat diseases across the state. The most damaging disease of winter wheat in Nebraska is wheat streak mosaic, caused by wheat streak mosaic virus. Although this disease has occurred predominantly in the western part of the state, it has caused damage in the south central and eastern parts as well.