Planet A has a tilt of five degrees. What seasonal changes would be expected on this planet?

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16

20 the compound al(nh3)2 has atoms of nitrogen.

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.