A rain shadow is a patch of land that has been forced to become a desert because mountain ranges blocked all plant-growing, rainy weather. On one side of the mountain, wet weather systems drop rain and snow. On the other side of the mountain—the rain shadow side—all that precipitation is blocked.
Its called the duodenum.
hope this helps you
Most mammals including humans are endothermic. Reptiles and amphibians are ectothermic.