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.
How to Plant Winter Rye. Winter rye is a type of grass that provides food for livestock in the cooler months. Farmers use this cover crop as a way to prolong their grazing season into the later months of autumn. Rye also can help improve the quality of poor soil, as it has the ability to absorb extra nitrogen in the soil.