What are the common breeds of dairy goats

The principal exotic dairy breeds of goats are Toggenberg, Sannen, French Alpine and Nubian. They are all noted for their higher milk yield and most of these breed, were imported to India to improve milk yield of our local breeds and to upgrade our non descript goats

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.