How do mountains influence climate? A) They moderate climate. B) They cause less precipitation to fall. C) They affect the type of soil found in the area and hence the vegatation. D) They do not affect climate. E) They affect rainfall by creating a rain shadow.

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.