Heat transfer always occurs from a region of high temperature to another region of lower temperature. Heat transfer changes the internal energy of both systems involved according to the First Law of Thermodynamics.
Cyperus esculentus (also called chufa sedge, nut grass, yellow nutsedge, tiger nut sedge, or earth almond) is a crop of the sedge family widespread across much of the world.It is native to most of the Western Hemisphere as well as southern Europe, Africa, Madagascar, the Middle East and the Indian Subcontinent.n Spain, C. esculentus is cultivated for its edible tubers, called earth almonds or tiger nuts, for the preparation of  horchata de chufa, a sweet, milk-like beverage. However, in most other countries, C. esculentus is considered a weed.
A: Tigers live in Asia, which is where their natural habitats are. They are most likely found in the swamps, grasslands and rain forests of Southeast Asia, China, Korea and Russia. In many areas, the number of tigers is dwindling due to poaching and loss of habitat, and the reproduction rate of tigers is not high. A female typically produces two to three cubs every 2 to 2 1/2 years, because cubs are not fully independent until they are about 2 years old.