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.
noun. 1  A carbonate or hydroxide of an alkali metal, the aqueous solution of which is bitter, slippery, caustic, and characteristically basic in reactions. 2  Any of various soluble mineral salts found in natural water and arid soils.3  Alkali metal.he definition of an alkali is a soluble salt that comes from the ashes of plants and is made up of mostly potassium or sodium carbonate.