In the short run, the shape of the average total cost curve (ATC) is U-shaped. The, short run average cost curve falls in the beginning, reaches a minimum and then begins to rise.The reasons for the average cost to fall in the beginning of production are that the fixed factors of a firm remain the same.The change only takes place in the variable factors such as raw material, labor, etc.he, short run average cost curve falls in the beginning, reaches a minimum and then begins to rise. The reasons for the average cost to fall in the beginning of production are that the fixed factors of a firm remain the same. The change only takes place in the variable factors such as raw material, labor, etc.
The definition of alkaline is any substance having a base pH higher than 7. Certain types of food (such as broccoli) are examples of something alkaline because their pH is higher than 7. 1  of, like, or having the properties of an alkali.  having a pH more than 7.
In chemistry, an alkali (/ËaelkÉlaÉª/ ; ËÃ¦lkÉlaÉª From: arabic-al qaly, Ø§ÙÙÙÙ, âØ§ÙÙØ§ÙÙ ashes of theâ) saltwort is a, basic ionic salt of an alkali metal or alkaline earth metal chemical. elementlkali salts are soluble hydroxides of alkali metals and alkaline earth metals, of which common examples are: 1  Sodium hydroxide-often called caustic soda. 2  Potassium hydroxide-commonly called caustic potash. 3  Lye-generic term for either of the previous two or even for a mixture.