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. elementlkalis are usually defined as a subset of the bases. One of two subsets is commonly chosen. 1  A basic salt of an alkali metal or alkaline earth metal (This includes Mg(OH) 2 but excludes NH 3 2  .). Any base that is soluble in water and forms hydroxide ions or the solution of a base in water.