The hypothalamus is an important part of your neuroendocrine system. It controls the interaction between your endocrine or hormone producing system and certain parts of your nervous system. Your hypothalamus is responsible for producing the hormone that triggers the start of your menstrual cycle.
The Low Countries (Dutch: de Lage Landen, French: les Pays-Bas) is a coastal region in western Europe, consisting especially of the Netherlands and Belgium, and the low-lying delta of the Rhine, Meuse, Scheldt, and Ems rivers where much of the land is at or below sea level.he Low Countries were the scene of the early northern towns, newly built rather than developed from ancient centres, that marked the reawakening of Europe in the 12th century.
Savannas are also characterised by seasonal water availability, with the majority of rainfall confined to one season; they are associated with several types of biomes, and are frequently in a transitional zone between forest and desert or grassland. Savanna covers approximately 20% of the Earth's land area.avannas are also characterised by seasonal water availability, with the majority of rainfall confined to one season; they are associated with several types of biomes, and are frequently in a transitional zone between forest and desert or grassland. Savanna covers approximately 20% of the Earth's land area.